Convert diagnostic ID to kebab case

Avoid using `-latest` runner labels in CI

.github/actions/prepare-mergeback-branch/action.yml

@@ -92,8 +92,7 @@ runs:
           Please do the following:
 
           - [ ] Approve running the full set of PR checks.
-          - [ ] Approve and merge the PR. When merging the PR, make sure "Create a merge commit" is
-                selected rather than "Squash and merge" or "Rebase and merge".
+          - [ ] Approve and merge the PR. When merging the PR, make sure "Create a merge commit" is selected rather than "Squash and merge" or "Rebase and merge".
         EOF
         )
 

.github/actions/prepare-test/action.yml

@@ -6,11 +6,11 @@ inputs:
     required: true
   use-all-platform-bundle:
     description: "If true, we output a tools URL with codeql-bundle.tar.gz file rather than platform-specific URL"
-    default: 'false'
+    default: "false"
     required: false
   setup-kotlin:
     description: "If true, we setup kotlin"
-    default: 'true'
+    default: "true"
     required: true
 outputs:
   tools-url:
@@ -73,7 +73,10 @@ runs:
           exit 1
         fi
 
-    - uses: fwilhe2/setup-kotlin@9c245a6425255f5e98ba1ce6c15d31fce7eca9da
+    - uses: fwilhe2/setup-kotlin@b325539ca8f6e1d9ee04efed06f49bdbf5426dbb # v2.1
       if: ${{ inputs.setup-kotlin == 'true' }}
       with:
-        version: 1.8.21
+        # Kotlin is installed on the runners by default, but the version that is pre-installed is too new
+        # to be supported by CodeQL. This Kotlin version is selected to be compatible with both the default Java
+        # version on the `ubuntu-latest` runners and CodeQL.
+        version: 2.1.20

.github/actions/release-initialise/action.yml

@@ -16,7 +16,7 @@ runs:
       shell: bash
 
     - name: Set up Node
-      uses: actions/setup-node@48b55a011bda9f5d6aeb4c2d9c7362e8dae4041e # v6.4.0
+      uses: actions/setup-node@949feb2413d6458794dcd2491c4babbbce0c15c1 # v7.1.0
       with:
         node-version: 24
         cache: 'npm'

.github/copilot-instructions.md

@@ -11,9 +11,12 @@ The CodeQL Action is used in GitHub Actions workflows to run CodeQL scans using
 
 ## Review instructions
 
-- When wording review comments, be helpful and friendly. Assume that the PR author has written the code with the best of intentions. Word your comments constructively as suggestions for improvements. Do not word suggestions as commands.
+- Prioritise identifying critical issues, such as logic bugs, over comments on documentation or typos.
+- When wording review comments, be helpful and friendly. Assume that the PR author has written the code with the best of intentions. Never word suggestions as commands or using the imperative. Examples of what you should never write: "Preserve that non-fatal behaviour here" or "Please preserve that non-fatal behaviour here".
+- When writing feedback, assume that the PR author is competent and is able to understand whether the point you are making is valid or not, why you are raising it, and how to best address it. While you can suggest how to address a point you are making, don't phrase it as a requirement or assume that it is the only solution.
+- Always word your comments constructively as suggestions for improvements, for example: "It would make sense to ..." or "Could you add ...?" or "Would it make sense to ...?"
 - If you want to comment on a change that you believe will fail a CI check, do not present the CI failure you expect as a fact. Instead, write that you think a change "may" lead to a failure in CI. Suggest that, if such a failure manifests, the changes you are commenting on may be the place responsible for the failure and are worth looking at.
-- If a suggestion you make is suitable for a follow-up, such as a refactoring that doesn't change the behaviour or fixing a typo in a comment, mention that it can be addressed in a later PR rather than blocking this one.
+- If a suggestion you make is suitable for a follow-up, such as a refactoring that doesn't change the behaviour or fixing a typo in a comment, mention that it can be addressed in a later PR rather than blocking this one or prefix your comment with "Minor: ".
 - If a change is a net improvement, for example because it improves on an existing limitation of existing code, do not complain about pre-existing problems that remain. You may comment on them, but you should make it clear that the thing you are commenting on is not new by writing e.g. "Not new in this PR, but [..]" followed by your description of the issue and a suggestion that it could be improved at the same time with e.g. "Consider whether this is worth addressing as part of this PR as well."
 
 ## Generated code
@@ -22,6 +25,16 @@ The main codebase of the CodeQL Action is written in TypeScript and compiled to
 
 GitHub Actions workflows in the `.github/workflows` directory whose filenames start with two underscores (e.g. `__all-platform-bundle.yml`) are automatically generated using the `pr-checks/sync.sh` script from template files in the `pr-checks/checks` directory. Therefore, you do not need to review files in the `.github/workflows` directory that start with two underscores. However, you should review changes to the `pr-checks` directory as well as workflows in the `.github/workflows` directory that do not start with underscores.
 
+## Feature flags
+
+Some functionality in the code may be gated behind feature flags, which are controlled server-side. If the functionality that is gated behind them is user-facing, then this should be documented in a change note at the time that the gated functionality is added. See `CHANGELOG.md` for existing notes that mention "experimental" for examples. These typically include information about when users may expect to see the feature rolled out.
+
+When a feature flag that gates some functionality is removed, this does not need to be documented in a change note since the feature is already rolled out and the notes for the release which introduced the feature already describe it. The only exception is functionality which will start having an effect on GHES as a result of the feature flag removal:
+
+- Most functionality gated behind feature flags does not affect GHES.
+- We can make functionality available on GHES by setting `defaultValue` to `true` first and waiting for this to have had an effect on GHES. No change note is needed if a feature flag is removed where `defaultValue` was `true`.
+- When removing a feature flag where `defaultValue` was `false` and the functionality starts to affect GHES, a change note may be appropriate.
+
 ## Release process
 
 Changes that are merged to the `main` branch are not used in production straight away. Instead, changes from `main` must first be released using the release process, which has to be manually triggered by a staff member. Therefore, it is possible for further changes to be made to the code after some changes have been merged to `main` but before they are released. Once the release process automation is started, a series of PRs are automatically generated:

.github/dependabot.yml

@@ -8,8 +8,6 @@ updates:
       interval: weekly
     cooldown:
       default-days: 7
-      exclude:
-        - "@actions/*"
     labels:
       - Rebuild
     # Ignore incompatible dependency updates
@@ -18,6 +16,14 @@ updates:
       # This might be fixed when we move to eslint v9.
       - dependency-name: "eslint-plugin-import"
         versions: [">=2.30.0"]
+
+      # Some of our dependencies are lagging behind with support for new versions of
+      # `undici` which is why we have to override it in `package.json`. Dependabot
+      # workflows fail when they try to update a dependency that is explicitly
+      # overriden. Since this happens somewhat routinely at the moment, we are
+      # excluding `undici` here and have to manually update it when needed.
+      - dependency-name: "undici"
+        versions: [">=7.30.1"]
     groups:
       npm-minor:
         patterns:
@@ -28,13 +34,11 @@ updates:
   - package-ecosystem: github-actions
     directories:
       - "/.github/workflows"
-      - "/.github/actions"
+      - "/.github/actions/*/"
     schedule:
       interval: weekly
     cooldown:
       default-days: 7
-      exclude:
-        - "actions/*"
     labels:
       - Rebuild
     groups:

.github/workflows/__all-platform-bundle.yml

@@ -54,11 +54,11 @@ jobs:
       fail-fast: false
       matrix:
         include:
-          - os: ubuntu-latest
+          - os: ubuntu-26.04
             version: nightly-latest
-          - os: macos-latest-xlarge
+          - os: macos-26-xlarge
             version: nightly-latest
-          - os: windows-latest
+          - os: windows-2025
             version: nightly-latest
     name: All-platform bundle
     if: github.triggering_actor != 'dependabot[bot]'

.github/workflows/__analysis-kinds.yml

@@ -34,28 +34,28 @@ jobs:
       fail-fast: false
       matrix:
         include:
-          - os: ubuntu-latest
+          - os: ubuntu-26.04
             version: linked
             analysis-kinds: code-scanning
-          - os: ubuntu-latest
+          - os: ubuntu-26.04
             version: linked
             analysis-kinds: code-quality
-          - os: ubuntu-latest
+          - os: ubuntu-26.04
             version: linked
             analysis-kinds: code-scanning,code-quality
-          - os: ubuntu-latest
+          - os: ubuntu-26.04
             version: linked
             analysis-kinds: risk-assessment
-          - os: ubuntu-latest
+          - os: ubuntu-26.04
             version: nightly-latest
             analysis-kinds: code-scanning
-          - os: ubuntu-latest
+          - os: ubuntu-26.04
             version: nightly-latest
             analysis-kinds: code-quality
-          - os: ubuntu-latest
+          - os: ubuntu-26.04
             version: nightly-latest
             analysis-kinds: code-scanning,code-quality
-          - os: ubuntu-latest
+          - os: ubuntu-26.04
             version: nightly-latest
             analysis-kinds: risk-assessment
     name: Analysis kinds
@@ -87,7 +87,7 @@ jobs:
           post-processed-sarif-path: '${{ runner.temp }}/post-processed'
 
       - name: Upload SARIF files
-        uses: actions/upload-artifact@043fb46d1a93c77aae656e7c1c64a875d1fc6a0a # v7.0.1
+        uses: actions/upload-artifact@cf430e030ddbb5b0abf93d22962f4752f3646cd9 # v7.0.2
         with:
           name: |
             analysis-kinds-${{ matrix.os }}-${{ matrix.version }}-${{ matrix.analysis-kinds }}
@@ -95,7 +95,7 @@ jobs:
           retention-days: 7
 
       - name: Upload post-processed SARIF
-        uses: actions/upload-artifact@043fb46d1a93c77aae656e7c1c64a875d1fc6a0a # v7.0.1
+        uses: actions/upload-artifact@cf430e030ddbb5b0abf93d22962f4752f3646cd9 # v7.0.2
         with:
           name: |
             post-processed-${{ matrix.os }}-${{ matrix.version }}-${{ matrix.analysis-kinds }}

.github/workflows/__analyze-ref-input.yml

@@ -54,7 +54,7 @@ jobs:
       fail-fast: false
       matrix:
         include:
-          - os: ubuntu-latest
+          - os: ubuntu-26.04
             version: default
     name: "Analyze: 'ref' and 'sha' from inputs"
     if: github.triggering_actor != 'dependabot[bot]'

.github/workflows/__autobuild-action.yml

@@ -44,11 +44,11 @@ jobs:
       fail-fast: false
       matrix:
         include:
-          - os: ubuntu-latest
+          - os: ubuntu-26.04
             version: linked
-          - os: macos-latest
+          - os: macos-26
             version: linked
-          - os: windows-latest
+          - os: windows-2025
             version: linked
     name: autobuild-action
     if: github.triggering_actor != 'dependabot[bot]'

.github/workflows/__autobuild-direct-tracing-with-working-dir.yml

@@ -44,13 +44,13 @@ jobs:
       fail-fast: false
       matrix:
         include:
-          - os: ubuntu-latest
+          - os: ubuntu-26.04
             version: linked
-          - os: windows-latest
+          - os: windows-2025
             version: linked
-          - os: ubuntu-latest
+          - os: ubuntu-26.04
             version: nightly-latest
-          - os: windows-latest
+          - os: windows-2025
             version: nightly-latest
     name: Autobuild direct tracing (custom working directory)
     if: github.triggering_actor != 'dependabot[bot]'
@@ -63,7 +63,7 @@ jobs:
       - name: Check out repository
         uses: actions/checkout@3d3c42e5aac5ba805825da76410c181273ba90b1 # v7.0.1
       - name: Install Java
-        uses: actions/setup-java@de7274f081f381c8f8158605e0321c36c376e2e6 # v6.0.1
+        uses: actions/setup-java@b843ebf9b913146b38da2eaa7aeddf76074ae1ad # v6.1.0
         with:
           java-version: ${{ inputs.java-version || '17' }}
           distribution: temurin

.github/workflows/__autobuild-working-dir.yml

@@ -34,7 +34,7 @@ jobs:
       fail-fast: false
       matrix:
         include:
-          - os: ubuntu-latest
+          - os: ubuntu-26.04
             version: linked
     name: Autobuild working directory
     if: github.triggering_actor != 'dependabot[bot]'

.github/workflows/__build-mode-autobuild.yml

@@ -44,13 +44,13 @@ jobs:
       fail-fast: false
       matrix:
         include:
-          - os: ubuntu-latest
+          - os: ubuntu-26.04
             version: linked
-          - os: windows-latest
+          - os: windows-2025
             version: linked
-          - os: ubuntu-latest
+          - os: ubuntu-26.04
             version: nightly-latest
-          - os: windows-latest
+          - os: windows-2025
             version: nightly-latest
     name: Build mode autobuild
     if: github.triggering_actor != 'dependabot[bot]'
@@ -63,7 +63,7 @@ jobs:
       - name: Check out repository
         uses: actions/checkout@3d3c42e5aac5ba805825da76410c181273ba90b1 # v7.0.1
       - name: Install Java
-        uses: actions/setup-java@de7274f081f381c8f8158605e0321c36c376e2e6 # v6.0.1
+        uses: actions/setup-java@b843ebf9b913146b38da2eaa7aeddf76074ae1ad # v6.1.0
         with:
           java-version: ${{ inputs.java-version || '17' }}
           distribution: temurin

.github/workflows/__build-mode-manual.yml

@@ -54,7 +54,7 @@ jobs:
       fail-fast: false
       matrix:
         include:
-          - os: ubuntu-latest
+          - os: ubuntu-26.04
             version: nightly-latest
     name: Build mode manual
     if: github.triggering_actor != 'dependabot[bot]'

.github/workflows/__build-mode-none.yml

@@ -34,9 +34,9 @@ jobs:
       fail-fast: false
       matrix:
         include:
-          - os: ubuntu-latest
+          - os: ubuntu-26.04
             version: linked
-          - os: ubuntu-latest
+          - os: ubuntu-26.04
             version: nightly-latest
     name: Build mode none
     if: github.triggering_actor != 'dependabot[bot]'

.github/workflows/__build-mode-rollback.yml

@@ -34,7 +34,7 @@ jobs:
       fail-fast: false
       matrix:
         include:
-          - os: ubuntu-latest
+          - os: ubuntu-26.04
             version: nightly-latest
     name: Build mode rollback
     if: github.triggering_actor != 'dependabot[bot]'

.github/workflows/__bundle-from-nightly.yml

@@ -34,7 +34,7 @@ jobs:
       fail-fast: false
       matrix:
         include:
-          - os: ubuntu-latest
+          - os: ubuntu-26.04
             version: linked
     name: 'Bundle: From nightly'
     if: github.triggering_actor != 'dependabot[bot]'

.github/workflows/__bundle-from-toolcache.yml

@@ -34,7 +34,7 @@ jobs:
       fail-fast: false
       matrix:
         include:
-          - os: ubuntu-latest
+          - os: ubuntu-26.04
             version: toolcache
     name: 'Bundle: From toolcache'
     if: github.triggering_actor != 'dependabot[bot]'
@@ -46,6 +46,15 @@ jobs:
     steps:
       - name: Check out repository
         uses: actions/checkout@3d3c42e5aac5ba805825da76410c181273ba90b1 # v7.0.1
+      - name: Install Node.js
+        uses: actions/setup-node@949feb2413d6458794dcd2491c4babbbce0c15c1 # v7.1.0
+        with:
+          node-version: 20.x
+          cache: npm
+      - name: Install newer npm
+        run: npm install -g npm@11.19.1
+      - name: Install dependencies
+        run: npm ci
       - name: Prepare test
         id: prepare-test
         uses: ./.github/actions/prepare-test
@@ -53,31 +62,20 @@ jobs:
           version: ${{ matrix.version }}
           use-all-platform-bundle: 'false'
           setup-kotlin: 'true'
-      - name: Install @actions/tool-cache
-        run: npm install @actions/tool-cache@3
       - name: Check toolcache contains CodeQL
         continue-on-error: true
-        uses: actions/github-script@ed597411d8f924073f98dfc5c65a23a2325f34cd # v8.0.0
-        with:
-          script: |
-            const toolcache = require('@actions/tool-cache');
-            const allCodeqlVersions = toolcache.findAllVersions('CodeQL');
-            if (allCodeqlVersions.length === 0) {
-              throw new Error(`CodeQL could not be found in the toolcache`);
-            }
+        run: |
+          cd ./../action
+          npx tsx ./pr-checks/toolcache.ts installed
+
       - id: setup-codeql
         uses: ./../action/setup-codeql
         with:
           tools: ${{ steps.prepare-test.outputs.tools-url }}
+
       - name: Check CodeQL is installed within the toolcache
-        uses: actions/github-script@ed597411d8f924073f98dfc5c65a23a2325f34cd # v8.0.0
-        with:
-          script: |
-            const toolcache = require('@actions/tool-cache');
-            const allCodeqlVersions = toolcache.findAllVersions('CodeQL');
-            console.log(`Found CodeQL versions: ${allCodeqlVersions}`);
-            if (allCodeqlVersions.length === 0) {
-              throw new Error('CodeQL not found in toolcache');
-            }
+        run: |
+          cd ./../action
+          npx tsx ./pr-checks/toolcache.ts installed
     env:
       CODEQL_ACTION_TEST_MODE: true

.github/workflows/__bundle-toolcache.yml

@@ -34,11 +34,11 @@ jobs:
       fail-fast: false
       matrix:
         include:
-          - os: ubuntu-latest
+          - os: ubuntu-26.04
             version: linked
-          - os: macos-latest
+          - os: macos-26
             version: linked
-          - os: windows-latest
+          - os: windows-2025
             version: linked
     name: 'Bundle: Caching checks'
     if: github.triggering_actor != 'dependabot[bot]'
@@ -50,6 +50,15 @@ jobs:
     steps:
       - name: Check out repository
         uses: actions/checkout@3d3c42e5aac5ba805825da76410c181273ba90b1 # v7.0.1
+      - name: Install Node.js
+        uses: actions/setup-node@949feb2413d6458794dcd2491c4babbbce0c15c1 # v7.1.0
+        with:
+          node-version: 20.x
+          cache: npm
+      - name: Install newer npm
+        run: npm install -g npm@11.19.1
+      - name: Install dependencies
+        run: npm ci
       - name: Prepare test
         id: prepare-test
         uses: ./.github/actions/prepare-test
@@ -58,47 +67,30 @@ jobs:
           use-all-platform-bundle: 'false'
           setup-kotlin: 'true'
       - name: Remove CodeQL from toolcache
-        uses: actions/github-script@ed597411d8f924073f98dfc5c65a23a2325f34cd # v8.0.0
-        with:
-          script: |
-            const fs = require('fs');
-            const path = require('path');
-            const codeqlPath = path.join(process.env['RUNNER_TOOL_CACHE'], 'CodeQL');
-            fs.rmdirSync(codeqlPath, { recursive: true });
-      - name: Install @actions/tool-cache
-        run: npm install @actions/tool-cache@3
+        run: |
+          cd ./../action
+          npx tsx ./pr-checks/toolcache.ts clear
+
       - name: Check toolcache does not contain CodeQL
-        uses: actions/github-script@ed597411d8f924073f98dfc5c65a23a2325f34cd # v8.0.0
-        with:
-          script: |
-            const toolcache = require('@actions/tool-cache');
-            const allCodeqlVersions = toolcache.findAllVersions('CodeQL');
-            if (allCodeqlVersions.length !== 0) {
-              throw new Error(`CodeQL should not be found in the toolcache, but found ${allCodeqlVersions}`);
-            }
-            console.log('No versions of CodeQL found in the toolcache');
+        run: |
+          cd ./../action
+          npx tsx ./pr-checks/toolcache.ts absent
+
       - id: init
         uses: ./../action/init
         with:
           # Request multiple languages so this check uses the combined bundle.
           languages: javascript,python
           tools: ${{ steps.prepare-test.outputs.tools-url }}
+
       - uses: ./../action/analyze
         with:
           output: ${{ runner.temp }}/results
           upload-database: false
+
       - name: Check CodeQL is installed within the toolcache
-        uses: actions/github-script@ed597411d8f924073f98dfc5c65a23a2325f34cd # v8.0.0
-        with:
-          script: |
-            const toolcache = require('@actions/tool-cache');
-            const allCodeqlVersions = toolcache.findAllVersions('CodeQL');
-            console.log(`Found CodeQL versions: ${allCodeqlVersions}`);
-            if (allCodeqlVersions.length === 0) {
-              throw new Error('CodeQL not found in toolcache');
-            }
-            if (allCodeqlVersions.length > 1) {
-              throw new Error('Multiple CodeQL versions found in toolcache');
-            }
+        run: |
+          cd ./../action
+          npx tsx ./pr-checks/toolcache.ts installed -n 1
     env:
       CODEQL_ACTION_TEST_MODE: true

.github/workflows/__cleanup-db-cluster-dir.yml

@@ -34,7 +34,7 @@ jobs:
       fail-fast: false
       matrix:
         include:
-          - os: ubuntu-latest
+          - os: ubuntu-26.04
             version: linked
     name: Clean up database cluster directory
     if: github.triggering_actor != 'dependabot[bot]'

.github/workflows/__config-export.yml

@@ -34,9 +34,9 @@ jobs:
       fail-fast: false
       matrix:
         include:
-          - os: ubuntu-latest
+          - os: ubuntu-26.04
             version: linked
-          - os: ubuntu-latest
+          - os: ubuntu-26.04
             version: nightly-latest
     name: Config export
     if: github.triggering_actor != 'dependabot[bot]'
@@ -65,7 +65,7 @@ jobs:
           output: '${{ runner.temp }}/results'
           upload-database: false
       - name: Upload SARIF
-        uses: actions/upload-artifact@043fb46d1a93c77aae656e7c1c64a875d1fc6a0a # v7.0.1
+        uses: actions/upload-artifact@cf430e030ddbb5b0abf93d22962f4752f3646cd9 # v7.0.2
         with:
           name: config-export-${{ matrix.os }}-${{ matrix.version }}.sarif.json
           path: '${{ runner.temp }}/results/javascript.sarif'

.github/workflows/__config-input.yml

@@ -34,7 +34,7 @@ jobs:
       fail-fast: false
       matrix:
         include:
-          - os: ubuntu-latest
+          - os: ubuntu-26.04
             version: linked
     name: Config input
     if: github.triggering_actor != 'dependabot[bot]'
@@ -47,10 +47,12 @@ jobs:
       - name: Check out repository
         uses: actions/checkout@3d3c42e5aac5ba805825da76410c181273ba90b1 # v7.0.1
       - name: Install Node.js
-        uses: actions/setup-node@820762786026740c76f36085b0efc47a31fe5020 # v7.0.0
+        uses: actions/setup-node@949feb2413d6458794dcd2491c4babbbce0c15c1 # v7.1.0
         with:
           node-version: 20.x
           cache: npm
+      - name: Install newer npm
+        run: npm install -g npm@11.19.1
       - name: Install dependencies
         run: npm ci
       - name: Prepare test

.github/workflows/__cpp-deptrace-disabled.yml

@@ -34,11 +34,11 @@ jobs:
       fail-fast: false
       matrix:
         include:
-          - os: ubuntu-latest
+          - os: ubuntu-26.04
             version: linked
-          - os: ubuntu-latest
+          - os: ubuntu-26.04
             version: default
-          - os: ubuntu-latest
+          - os: ubuntu-26.04
             version: nightly-latest
     name: 'C/C++: disabling autoinstalling dependencies (Linux)'
     if: github.triggering_actor != 'dependabot[bot]'

.github/workflows/__cpp-deptrace-enabled-on-macos.yml

@@ -34,9 +34,9 @@ jobs:
       fail-fast: false
       matrix:
         include:
-          - os: macos-latest
+          - os: macos-26
             version: linked
-          - os: macos-latest
+          - os: macos-26
             version: nightly-latest
     name: 'C/C++: autoinstalling dependencies is skipped (macOS)'
     if: github.triggering_actor != 'dependabot[bot]'

.github/workflows/__cpp-deptrace-enabled.yml

@@ -34,11 +34,11 @@ jobs:
       fail-fast: false
       matrix:
         include:
-          - os: ubuntu-latest
+          - os: ubuntu-26.04
             version: linked
-          - os: ubuntu-latest
+          - os: ubuntu-26.04
             version: default
-          - os: ubuntu-latest
+          - os: ubuntu-26.04
             version: nightly-latest
     name: 'C/C++: autoinstalling dependencies (Linux)'
     if: github.triggering_actor != 'dependabot[bot]'

.github/workflows/__diagnostics-export.yml

@@ -34,9 +34,9 @@ jobs:
       fail-fast: false
       matrix:
         include:
-          - os: ubuntu-latest
+          - os: ubuntu-26.04
             version: linked
-          - os: ubuntu-latest
+          - os: ubuntu-26.04
             version: nightly-latest
     name: Diagnostic export
     if: github.triggering_actor != 'dependabot[bot]'
@@ -48,6 +48,15 @@ jobs:
     steps:
       - name: Check out repository
         uses: actions/checkout@3d3c42e5aac5ba805825da76410c181273ba90b1 # v7.0.1
+      - name: Install Node.js
+        uses: actions/setup-node@949feb2413d6458794dcd2491c4babbbce0c15c1 # v7.1.0
+        with:
+          node-version: 20.x
+          cache: npm
+      - name: Install newer npm
+        run: npm install -g npm@11.19.1
+      - name: Install dependencies
+        run: npm ci
       - name: Prepare test
         id: prepare-test
         uses: ./.github/actions/prepare-test
@@ -76,61 +85,18 @@ jobs:
           output: '${{ runner.temp }}/results'
           upload-database: false
       - name: Upload SARIF
-        uses: actions/upload-artifact@043fb46d1a93c77aae656e7c1c64a875d1fc6a0a # v7.0.1
+        uses: actions/upload-artifact@cf430e030ddbb5b0abf93d22962f4752f3646cd9 # v7.0.2
         with:
           name: diagnostics-export-${{ matrix.os }}-${{ matrix.version }}.sarif.json
           path: '${{ runner.temp }}/results/javascript.sarif'
           retention-days: 7
+
       - name: Check diagnostics appear in SARIF
-        uses: actions/github-script@ed597411d8f924073f98dfc5c65a23a2325f34cd # v8.0.0
         env:
           SARIF_PATH: '${{ runner.temp }}/results/javascript.sarif'
-        with:
-          script: |
-            const fs = require('fs');
-
-            function checkStatusPageNotification(n) {
-              const expectedMessage = 'Plaintext message';
-              if (n.message.text !== expectedMessage) {
-                core.setFailed(`Expected the status page diagnostic to have the message '${expectedMessage}', but found '${n.message.text}'.`);
-              }
-              if (n.locations.length !== 1) {
-                core.setFailed(`Expected the status page diagnostic to have exactly 1 location, but found ${n.locations.length}.`);
-              }
-            }
-
-            const sarif = JSON.parse(fs.readFileSync(process.env['SARIF_PATH'], 'utf8'));
-            const run = sarif.runs[0];
-
-            const toolExecutionNotifications = run.invocations[0].toolExecutionNotifications;
-            const statusPageNotifications = toolExecutionNotifications.filter(n =>
-              n.descriptor.id === 'lang/diagnostics/example' && n.properties?.visibility?.statusPage
-            );
-            if (statusPageNotifications.length !== 1) {
-              core.setFailed(
-                'Expected exactly one status page reporting descriptor for this diagnostic in the ' +
-                  `'runs[].invocations[].toolExecutionNotifications[]' SARIF property, but found ` +
-                  `${statusPageNotifications.length}. All notification reporting descriptors: ` +
-                  `${JSON.stringify(toolExecutionNotifications)}.`
-              );
-            }
-            checkStatusPageNotification(statusPageNotifications[0]);
-
-            const notifications = run.tool.driver.notifications;
-            const diagnosticNotification = notifications.filter(n =>
-              n.id === 'lang/diagnostics/example' && n.name === 'lang/diagnostics/example' &&
-                n.fullDescription.text === 'Diagnostic name'
-            );
-            if (diagnosticNotification.length !== 1) {
-              core.setFailed(
-                'Expected exactly one notification for this diagnostic in the ' +
-                  `'runs[].tool.driver.notifications[]' SARIF property, but found ` +
-                  `${diagnosticNotification.length}. All notifications: ` +
-                  `${JSON.stringify(notifications)}.`
-              );
-            }
-
-            core.info('Finished diagnostic export test');
+        run: |
+          cd ../action
+          npx tsx ./pr-checks/check-diagnostics.ts
     env:
       CODEQL_ACTION_EXPORT_DIAGNOSTICS: true
       CODEQL_ACTION_TEST_MODE: true

.github/workflows/__diagnostics-without-db.yml

@@ -0,0 +1,143 @@
+# Warning: This file is generated automatically, and should not be modified.
+# Instead, please modify the template in the pr-checks directory and run:
+#     pr-checks/sync.sh
+# to regenerate this file.
+
+name: PR Check - Diagnostic export without database
+env:
+  GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+  GO111MODULE: auto
+on:
+  push:
+    branches:
+      - main
+      - releases/v*
+  pull_request: {}
+  merge_group:
+    types:
+      - checks_requested
+  schedule:
+    - cron: '0 5 * * *'
+  workflow_dispatch:
+    inputs: {}
+  workflow_call:
+    inputs: {}
+defaults:
+  run:
+    shell: bash
+concurrency:
+  cancel-in-progress: ${{ github.event_name == 'pull_request' || false }}
+  group: diagnostics-without-db-${{github.ref}}
+jobs:
+  diagnostics-without-db:
+    strategy:
+      fail-fast: false
+      matrix:
+        include:
+          - os: ubuntu-26.04
+            version: linked
+    name: Diagnostic export without database
+    if: github.triggering_actor != 'dependabot[bot]'
+    permissions:
+      contents: read
+      security-events: read
+    timeout-minutes: 45
+    runs-on: ${{ matrix.os }}
+    steps:
+      # We deliberately need to make this step fail before the database is initialised, but after
+      # some diagnostic has been produced. The simplest way to do that right now is to:
+      #
+      # - Produce a diagnostic before the db is initialised by forcing the use of a nightly release
+      #   with the `CODEQL_ACTION_FORCE_NIGHTLY` feature flag.
+      # - Cause `init` to abort because we are attempting to analyse Swift on a non-macOS runner.
+      #
+      - name: Check out repository
+        uses: actions/checkout@3d3c42e5aac5ba805825da76410c181273ba90b1 # v7.0.1
+      - name: Install Node.js
+        uses: actions/setup-node@949feb2413d6458794dcd2491c4babbbce0c15c1 # v7.1.0
+        with:
+          node-version: 20.x
+          cache: npm
+      - name: Install newer npm
+        run: npm install -g npm@11.19.1
+      - name: Install dependencies
+        run: npm ci
+      - name: Prepare test
+        id: prepare-test
+        uses: ./.github/actions/prepare-test
+        with:
+          version: ${{ matrix.version }}
+          use-all-platform-bundle: 'false'
+          setup-kotlin: 'true'
+      - name: Initialise failing analysis
+        id: init
+        uses: ./../action/init
+        continue-on-error: true
+        env:
+          CODEQL_ACTION_FORCE_NIGHTLY: true
+        with:
+          languages: swift
+          tools: ${{ steps.prepare-test.outputs.tools-url }}
+
+      - name: Analyze
+        uses: ./analyze
+        # In a real workflow, this step wouldn't run. Since we used `continue-on-error`
+        # above, we manually disable it with an `if` condition. Having this step is required
+        # for the init post-action because it checks the workflow definition for e.g. the
+        # `category` input. Without this step, that part of the init post-action would fail.
+        if: false
+        with:
+          category: '/test-codeql-version:${{ matrix.version }}'
+
+      - name: Check diagnostics appear on disk
+        env:
+          DIAGNOSTICS_DIR: '${{ runner.temp }}/codeql-action-temp-diagnostics/'
+        run: |
+          cd ../action
+          npx tsx ./pr-checks/diagnostics-without-db.ts
+    env:
+      CODEQL_ACTION_SKIP_GENERATE_FAILED_SARIF: false
+      CODEQL_ACTION_SKIP_SARIF_UPLOAD: true
+      CODEQL_ACTION_TESTING_ENVIRONMENT: codeql-action-pr-checks
+      CODEQL_ACTION_TEST_MODE: true
+  diagnostics-without-db-validation:
+    if: github.triggering_actor != 'dependabot[bot]'
+    needs:
+      - diagnostics-without-db
+    permissions:
+      contents: read
+      security-events: read
+    timeout-minutes: 5
+    runs-on: ubuntu-26.04
+    steps:
+      - name: Check out repository
+        uses: actions/checkout@3d3c42e5aac5ba805825da76410c181273ba90b1 # v7.0.1
+      - name: Install Node.js
+        uses: actions/setup-node@949feb2413d6458794dcd2491c4babbbce0c15c1 # v7.1.0
+        with:
+          node-version: 20.x
+          cache: npm
+      - name: Install newer npm
+        run: npm install -g npm@11.19.1
+      - name: Install dependencies
+        run: npm ci
+      - name: Download workflow artifact
+        uses: actions/download-artifact@9000827ccba6bdab643e8b6fd33ac0654aef8333 # v8.0.2
+        with:
+          pattern: test-mode-sarif-*
+          path: sarif
+
+      - name: List artifact contents
+        run: ls -laR ./sarif
+
+      - name: Check diagnostics appear in SARIF
+        env:
+          SARIF_PATH: "./sarif/codeql-failed-run.sarif"
+          DIAGNOSTIC_ID: "codeql-action/forced-nightly-cli"
+          DIAGNOSTIC_NAME: "A nightly release of CodeQL was used"
+          EXPECTED_LOCATIONS: "0"
+          EXPECTED_MESSAGE: |
+            GitHub configured this analysis to use a nightly release of CodeQL to allow you to preview changes from an upcoming release.
+        run: npx tsx ./pr-checks/check-diagnostics.ts
+    env:
+      CODEQL_ACTION_TEST_MODE: true

.github/workflows/__export-file-baseline-information.yml

@@ -54,11 +54,11 @@ jobs:
       fail-fast: false
       matrix:
         include:
-          - os: ubuntu-latest
+          - os: ubuntu-26.04
             version: nightly-latest
-          - os: macos-latest
+          - os: macos-26
             version: nightly-latest
-          - os: windows-latest
+          - os: windows-2025
             version: nightly-latest
     name: Export file baseline information
     if: github.triggering_actor != 'dependabot[bot]'
@@ -91,13 +91,18 @@ jobs:
         with:
           languages: javascript
           tools: ${{ steps.prepare-test.outputs.tools-url }}
+          # To balance speed and coverage, analyze only JavaScript but use the combined bundle so
+          # baseline information is reported for every language in the multi-language repository. A
+          # custom configuration prevents per-language bundles from being used.
+          config: |
+            paths-ignore: []
       - name: Build code
         run: ./build.sh
       - uses: ./../action/analyze
         with:
           output: '${{ runner.temp }}/results'
       - name: Upload SARIF
-        uses: actions/upload-artifact@043fb46d1a93c77aae656e7c1c64a875d1fc6a0a # v7.0.1
+        uses: actions/upload-artifact@cf430e030ddbb5b0abf93d22962f4752f3646cd9 # v7.0.2
         with:
           name: with-baseline-information-${{ matrix.os }}-${{ matrix.version }}.sarif.json
           path: '${{ runner.temp }}/results/javascript.sarif'

.github/workflows/__extractor-ram-threads.yml

@@ -34,7 +34,7 @@ jobs:
       fail-fast: false
       matrix:
         include:
-          - os: ubuntu-latest
+          - os: ubuntu-26.04
             version: linked
     name: Extractor ram and threads options test
     if: github.triggering_actor != 'dependabot[bot]'

.github/workflows/__global-proxy.yml

@@ -34,9 +34,9 @@ jobs:
       fail-fast: false
       matrix:
         include:
-          - os: ubuntu-latest
+          - os: ubuntu-26.04
             version: linked
-          - os: ubuntu-latest
+          - os: ubuntu-26.04
             version: nightly-latest
     name: Proxy test
     if: github.triggering_actor != 'dependabot[bot]'

.github/workflows/__go-custom-queries.yml

@@ -54,9 +54,9 @@ jobs:
       fail-fast: false
       matrix:
         include:
-          - os: ubuntu-latest
+          - os: ubuntu-26.04
             version: linked
-          - os: ubuntu-latest
+          - os: ubuntu-26.04
             version: nightly-latest
     name: 'Go: Custom queries'
     if: github.triggering_actor != 'dependabot[bot]'

.github/workflows/__go-indirect-tracing-workaround-diagnostic.yml

@@ -44,7 +44,7 @@ jobs:
       fail-fast: false
       matrix:
         include:
-          - os: ubuntu-latest
+          - os: ubuntu-26.04
             version: default
     name: 'Go: diagnostic when Go is changed after init step'
     if: github.triggering_actor != 'dependabot[bot]'

.github/workflows/__go-indirect-tracing-workaround-no-file-program.yml

@@ -44,7 +44,7 @@ jobs:
       fail-fast: false
       matrix:
         include:
-          - os: ubuntu-latest
+          - os: ubuntu-26.04
             version: default
     name: 'Go: diagnostic when `file` is not installed'
     if: github.triggering_actor != 'dependabot[bot]'

.github/workflows/__go-indirect-tracing-workaround.yml

@@ -44,7 +44,7 @@ jobs:
       fail-fast: false
       matrix:
         include:
-          - os: ubuntu-latest
+          - os: ubuntu-26.04
             version: default
     name: 'Go: workaround for indirect tracing'
     if: github.triggering_actor != 'dependabot[bot]'

.github/workflows/__go-tracing-autobuilder.yml

@@ -44,27 +44,27 @@ jobs:
       fail-fast: false
       matrix:
         include:
-          - os: ubuntu-latest
-            version: stable-v2.19.4
-          - os: ubuntu-latest
+          - os: ubuntu-24.04
             version: stable-v2.20.7
-          - os: ubuntu-latest
+          - os: ubuntu-26.04
             version: stable-v2.21.4
-          - os: ubuntu-latest
+          - os: ubuntu-26.04
             version: stable-v2.22.4
-          - os: ubuntu-latest
+          - os: ubuntu-26.04
             version: stable-v2.23.9
-          - os: ubuntu-latest
+          - os: ubuntu-26.04
             version: stable-v2.24.3
-          - os: ubuntu-latest
+          - os: ubuntu-26.04
+            version: stable-v2.25.6
+          - os: ubuntu-26.04
             version: default
-          - os: ubuntu-latest
+          - os: ubuntu-26.04
             version: linked
-          - os: macos-latest
+          - os: macos-26
             version: linked
-          - os: ubuntu-latest
+          - os: ubuntu-26.04
             version: nightly-latest
-          - os: macos-latest
+          - os: macos-26
             version: nightly-latest
     name: 'Go: tracing with autobuilder step'
     if: github.triggering_actor != 'dependabot[bot]'

.github/workflows/__go-tracing-custom-build-steps.yml

@@ -44,27 +44,27 @@ jobs:
       fail-fast: false
       matrix:
         include:
-          - os: ubuntu-latest
-            version: stable-v2.19.4
-          - os: ubuntu-latest
+          - os: ubuntu-24.04
             version: stable-v2.20.7
-          - os: ubuntu-latest
+          - os: ubuntu-26.04
             version: stable-v2.21.4
-          - os: ubuntu-latest
+          - os: ubuntu-26.04
             version: stable-v2.22.4
-          - os: ubuntu-latest
+          - os: ubuntu-26.04
             version: stable-v2.23.9
-          - os: ubuntu-latest
+          - os: ubuntu-26.04
             version: stable-v2.24.3
-          - os: ubuntu-latest
+          - os: ubuntu-26.04
+            version: stable-v2.25.6
+          - os: ubuntu-26.04
             version: default
-          - os: ubuntu-latest
+          - os: ubuntu-26.04
             version: linked
-          - os: macos-latest
+          - os: macos-26
             version: linked
-          - os: ubuntu-latest
+          - os: ubuntu-26.04
             version: nightly-latest
-          - os: macos-latest
+          - os: macos-26
             version: nightly-latest
     name: 'Go: tracing with custom build steps'
     if: github.triggering_actor != 'dependabot[bot]'

.github/workflows/__go-tracing-legacy-workflow.yml

@@ -44,27 +44,27 @@ jobs:
       fail-fast: false
       matrix:
         include:
-          - os: ubuntu-latest
-            version: stable-v2.19.4
-          - os: ubuntu-latest
+          - os: ubuntu-24.04
             version: stable-v2.20.7
-          - os: ubuntu-latest
+          - os: ubuntu-26.04
             version: stable-v2.21.4
-          - os: ubuntu-latest
+          - os: ubuntu-26.04
             version: stable-v2.22.4
-          - os: ubuntu-latest
+          - os: ubuntu-26.04
             version: stable-v2.23.9
-          - os: ubuntu-latest
+          - os: ubuntu-26.04
             version: stable-v2.24.3
-          - os: ubuntu-latest
+          - os: ubuntu-26.04
+            version: stable-v2.25.6
+          - os: ubuntu-26.04
             version: default
-          - os: ubuntu-latest
+          - os: ubuntu-26.04
             version: linked
-          - os: macos-latest
+          - os: macos-26
             version: linked
-          - os: ubuntu-latest
+          - os: ubuntu-26.04
             version: nightly-latest
-          - os: macos-latest
+          - os: macos-26
             version: nightly-latest
     name: 'Go: tracing with legacy workflow'
     if: github.triggering_actor != 'dependabot[bot]'

.github/workflows/__init-with-registries.yml

@@ -34,11 +34,11 @@ jobs:
       fail-fast: false
       matrix:
         include:
-          - os: ubuntu-latest
+          - os: ubuntu-26.04
             version: default
-          - os: ubuntu-latest
+          - os: ubuntu-26.04
             version: linked
-          - os: ubuntu-latest
+          - os: ubuntu-26.04
             version: nightly-latest
     name: 'Packaging: Download using registries'
     if: github.triggering_actor != 'dependabot[bot]'

.github/workflows/__javascript-source-root.yml

@@ -34,11 +34,11 @@ jobs:
       fail-fast: false
       matrix:
         include:
-          - os: ubuntu-latest
+          - os: ubuntu-26.04
             version: linked
-          - os: ubuntu-latest
+          - os: ubuntu-26.04
             version: default
-          - os: ubuntu-latest
+          - os: ubuntu-26.04
             version: nightly-latest
     name: Custom source root
     if: github.triggering_actor != 'dependabot[bot]'

.github/workflows/__job-run-uuid-sarif.yml

@@ -34,7 +34,7 @@ jobs:
       fail-fast: false
       matrix:
         include:
-          - os: ubuntu-latest
+          - os: ubuntu-26.04
             version: nightly-latest
     name: Job run UUID added to SARIF
     if: github.triggering_actor != 'dependabot[bot]'
@@ -62,7 +62,7 @@ jobs:
         with:
           output: '${{ runner.temp }}/results'
       - name: Upload SARIF
-        uses: actions/upload-artifact@043fb46d1a93c77aae656e7c1c64a875d1fc6a0a # v7.0.1
+        uses: actions/upload-artifact@cf430e030ddbb5b0abf93d22962f4752f3646cd9 # v7.0.2
         with:
           name: ${{ matrix.os }}-${{ matrix.version }}.sarif.json
           path: '${{ runner.temp }}/results/javascript.sarif'

.github/workflows/__language-aliases.yml

@@ -34,7 +34,7 @@ jobs:
       fail-fast: false
       matrix:
         include:
-          - os: ubuntu-latest
+          - os: ubuntu-26.04
             version: linked
     name: Language aliases
     if: github.triggering_actor != 'dependabot[bot]'

.github/workflows/__local-bundle.yml

@@ -54,7 +54,7 @@ jobs:
       fail-fast: false
       matrix:
         include:
-          - os: ubuntu-latest
+          - os: ubuntu-26.04
             version: linked
     name: Local CodeQL bundle
     if: github.triggering_actor != 'dependabot[bot]'

.github/workflows/__multi-language-autodetect.yml

@@ -54,41 +54,41 @@ jobs:
       fail-fast: false
       matrix:
         include:
-          - os: ubuntu-latest
-            version: stable-v2.19.4
-          - os: macos-15-xlarge
-            version: stable-v2.19.4
-          - os: ubuntu-latest
+          - os: ubuntu-24.04
             version: stable-v2.20.7
           - os: macos-15-xlarge
             version: stable-v2.20.7
-          - os: ubuntu-latest
+          - os: ubuntu-26.04
             version: stable-v2.21.4
           - os: macos-15-xlarge
             version: stable-v2.21.4
-          - os: ubuntu-latest
+          - os: ubuntu-26.04
             version: stable-v2.22.4
           - os: macos-15-xlarge
             version: stable-v2.22.4
-          - os: ubuntu-latest
+          - os: ubuntu-26.04
             version: stable-v2.23.9
-          - os: macos-latest-xlarge
+          - os: macos-26-xlarge
             version: stable-v2.23.9
-          - os: ubuntu-latest
+          - os: ubuntu-26.04
             version: stable-v2.24.3
-          - os: macos-latest-xlarge
+          - os: macos-26-xlarge
             version: stable-v2.24.3
-          - os: ubuntu-latest
+          - os: ubuntu-26.04
+            version: stable-v2.25.6
+          - os: macos-26-xlarge
+            version: stable-v2.25.6
+          - os: ubuntu-26.04
             version: default
-          - os: macos-latest-xlarge
+          - os: macos-26-xlarge
             version: default
-          - os: ubuntu-latest
+          - os: ubuntu-26.04
             version: linked
-          - os: macos-latest-xlarge
+          - os: macos-26-xlarge
             version: linked
-          - os: ubuntu-latest
+          - os: ubuntu-26.04
             version: nightly-latest
-          - os: macos-latest-xlarge
+          - os: macos-26-xlarge
             version: nightly-latest
     name: Multi-language repository
     if: github.triggering_actor != 'dependabot[bot]'
@@ -116,13 +116,14 @@ jobs:
           version: ${{ matrix.version }}
           use-all-platform-bundle: 'false'
           setup-kotlin: 'true'
-      - name: Install Python 3.13 for older CLI versions
-        # We need Python 3.13 for older CLI versions because they are not compatible with Python 3.14 or newer.
+      - name: Install Python 3.13.15 for older CLI versions
+        # Older CLI versions don't work with Python 3.13.16 or newer because their Python extractor
+        # imports `importlib._bootstrap._ERR_MSG`, which those Python versions no longer define.
         # See https://github.com/github/codeql-action/pull/3212
         if: matrix.version != 'nightly-latest' && matrix.version != 'linked'
-        uses: actions/setup-python@5fda3b95a4ea91299a34e894583c3862153e4b97 # v7.0.0
+        uses: actions/setup-python@6d4fd22b20465ccc0f7354476588e8df7c9ca0e0 # v7.1.0
         with:
-          python-version: '3.13'
+          python-version: '3.13.15'
 
       - name: Use Xcode 16
         # Only the older CodeQL CLI versions need Xcode 16, and these run on macOS 15.
@@ -191,6 +192,5 @@ jobs:
             exit 1
           fi
     env:
-      CODEQL_ACTION_CLEANUP_TOOLCACHE_BUNDLES: true
       CODEQL_ACTION_RESOLVE_SUPPORTED_LANGUAGES_USING_CLI: true
       CODEQL_ACTION_TEST_MODE: true

.github/workflows/__overlay-init-fallback.yml

@@ -34,9 +34,9 @@ jobs:
       fail-fast: false
       matrix:
         include:
-          - os: ubuntu-latest
+          - os: ubuntu-26.04
             version: linked
-          - os: ubuntu-latest
+          - os: ubuntu-26.04
             version: nightly-latest
     name: Overlay database init fallback
     if: github.triggering_actor != 'dependabot[bot]'

.github/workflows/__packaging-codescanning-config-inputs-js.yml

@@ -54,11 +54,11 @@ jobs:
       fail-fast: false
       matrix:
         include:
-          - os: ubuntu-latest
+          - os: ubuntu-26.04
             version: linked
-          - os: ubuntu-latest
+          - os: ubuntu-26.04
             version: default
-          - os: ubuntu-latest
+          - os: ubuntu-26.04
             version: nightly-latest
     name: 'Packaging: Config and input passed to the CLI'
     if: github.triggering_actor != 'dependabot[bot]'
@@ -80,10 +80,12 @@ jobs:
           go-version: ${{ inputs.go-version || '>=1.21.0' }}
           cache: false
       - name: Install Node.js
-        uses: actions/setup-node@820762786026740c76f36085b0efc47a31fe5020 # v7.0.0
+        uses: actions/setup-node@949feb2413d6458794dcd2491c4babbbce0c15c1 # v7.1.0
         with:
           node-version: 20.x
           cache: npm
+      - name: Install newer npm
+        run: npm install -g npm@11.19.1
       - name: Install dependencies
         run: npm ci
       - name: Prepare test

.github/workflows/__packaging-config-inputs-js.yml

@@ -54,11 +54,11 @@ jobs:
       fail-fast: false
       matrix:
         include:
-          - os: ubuntu-latest
+          - os: ubuntu-26.04
             version: linked
-          - os: ubuntu-latest
+          - os: ubuntu-26.04
             version: default
-          - os: ubuntu-latest
+          - os: ubuntu-26.04
             version: nightly-latest
     name: 'Packaging: Config and input'
     if: github.triggering_actor != 'dependabot[bot]'
@@ -80,10 +80,12 @@ jobs:
           go-version: ${{ inputs.go-version || '>=1.21.0' }}
           cache: false
       - name: Install Node.js
-        uses: actions/setup-node@820762786026740c76f36085b0efc47a31fe5020 # v7.0.0
+        uses: actions/setup-node@949feb2413d6458794dcd2491c4babbbce0c15c1 # v7.1.0
         with:
           node-version: 20.x
           cache: npm
+      - name: Install newer npm
+        run: npm install -g npm@11.19.1
       - name: Install dependencies
         run: npm ci
       - name: Prepare test

.github/workflows/__packaging-config-js.yml

@@ -54,11 +54,11 @@ jobs:
       fail-fast: false
       matrix:
         include:
-          - os: ubuntu-latest
+          - os: ubuntu-26.04
             version: linked
-          - os: ubuntu-latest
+          - os: ubuntu-26.04
             version: default
-          - os: ubuntu-latest
+          - os: ubuntu-26.04
             version: nightly-latest
     name: 'Packaging: Config file'
     if: github.triggering_actor != 'dependabot[bot]'
@@ -80,10 +80,12 @@ jobs:
           go-version: ${{ inputs.go-version || '>=1.21.0' }}
           cache: false
       - name: Install Node.js
-        uses: actions/setup-node@820762786026740c76f36085b0efc47a31fe5020 # v7.0.0
+        uses: actions/setup-node@949feb2413d6458794dcd2491c4babbbce0c15c1 # v7.1.0
         with:
           node-version: 20.x
           cache: npm
+      - name: Install newer npm
+        run: npm install -g npm@11.19.1
       - name: Install dependencies
         run: npm ci
       - name: Prepare test

.github/workflows/__packaging-inputs-js.yml

@@ -54,11 +54,11 @@ jobs:
       fail-fast: false
       matrix:
         include:
-          - os: ubuntu-latest
+          - os: ubuntu-26.04
             version: linked
-          - os: ubuntu-latest
+          - os: ubuntu-26.04
             version: default
-          - os: ubuntu-latest
+          - os: ubuntu-26.04
             version: nightly-latest
     name: 'Packaging: Action input'
     if: github.triggering_actor != 'dependabot[bot]'
@@ -80,10 +80,12 @@ jobs:
           go-version: ${{ inputs.go-version || '>=1.21.0' }}
           cache: false
       - name: Install Node.js
-        uses: actions/setup-node@820762786026740c76f36085b0efc47a31fe5020 # v7.0.0
+        uses: actions/setup-node@949feb2413d6458794dcd2491c4babbbce0c15c1 # v7.1.0
         with:
           node-version: 20.x
           cache: npm
+      - name: Install newer npm
+        run: npm install -g npm@11.19.1
       - name: Install dependencies
         run: npm ci
       - name: Prepare test

.github/workflows/__per-language-bundle-validation.yml

@@ -35,41 +35,41 @@ jobs:
       matrix:
         include:
           - language: actions
-            os: ubuntu-latest
-            version: nightly-latest
+            os: ubuntu-26.04
+            version: linked
             expected-extractors: actions javascript
           - language: cpp
-            os: ubuntu-latest
-            version: nightly-latest
+            os: ubuntu-26.04
+            version: linked
             build-mode: manual
             build-command: gcc -o main main.c
           - language: csharp
-            os: ubuntu-latest
-            version: nightly-latest
+            os: ubuntu-26.04
+            version: linked
             build-mode: none
           - language: go
-            os: ubuntu-latest
-            version: nightly-latest
+            os: ubuntu-26.04
+            version: linked
             build-mode: autobuild
           - language: java
-            os: ubuntu-latest
-            version: nightly-latest
+            os: ubuntu-26.04
+            version: linked
             build-mode: none
           - language: javascript
-            os: ubuntu-latest
-            version: nightly-latest
+            os: ubuntu-26.04
+            version: linked
           - language: python
-            os: ubuntu-latest
-            version: nightly-latest
+            os: ubuntu-26.04
+            version: linked
           - language: ruby
-            os: ubuntu-latest
-            version: nightly-latest
+            os: ubuntu-26.04
+            version: linked
           - language: rust
-            os: ubuntu-latest
-            version: nightly-latest
+            os: ubuntu-26.04
+            version: linked
           - language: swift
-            os: macos-latest-xlarge
-            version: nightly-latest
+            os: macos-26-xlarge
+            version: linked
             build-mode: autobuild
     name: Per-language bundles
     if: github.triggering_actor != 'dependabot[bot]'
@@ -81,6 +81,15 @@ jobs:
     steps:
       - name: Check out repository
         uses: actions/checkout@3d3c42e5aac5ba805825da76410c181273ba90b1 # v7.0.1
+      - name: Install Node.js
+        uses: actions/setup-node@949feb2413d6458794dcd2491c4babbbce0c15c1 # v7.1.0
+        with:
+          node-version: 20.x
+          cache: npm
+      - name: Install newer npm
+        run: npm install -g npm@11.19.1
+      - name: Install dependencies
+        run: npm ci
       - name: Prepare test
         id: prepare-test
         uses: ./.github/actions/prepare-test
@@ -88,6 +97,10 @@ jobs:
           version: ${{ matrix.version }}
           use-all-platform-bundle: 'false'
           setup-kotlin: 'true'
+      - name: Remove CodeQL from toolcache
+        run: |
+          cd ./../action
+          npx tsx ./pr-checks/toolcache.ts clear
       - uses: ./../action/init
         id: init
         with:
@@ -128,9 +141,8 @@ jobs:
           CODEQL_PATH: ${{ steps.init.outputs.codeql-path }}
         run: |
           # A bundle that is missing most of its extractors must never be left in the toolcache,
-          # where a later job analyzing a different language could pick it up. The runner image
-          # ships with its own CodeQL in the toolcache, so check where this bundle was extracted to
-          # rather than whether the toolcache contains CodeQL at all.
+          # where a later job analyzing a different language could pick it up. Per-language bundles
+          # must instead be extracted under the runner's temporary directory.
           echo "CodeQL is at $CODEQL_PATH"
           if [[ "$CODEQL_PATH" == "$RUNNER_TOOL_CACHE"/* ]]; then
             echo "::error::The per-language bundle was added to the toolcache at $CODEQL_PATH."
@@ -160,5 +172,4 @@ jobs:
           fi
           echo "Created a ${LANGUAGE} database at ${database}."
     env:
-      CODEQL_ACTION_PER_LANGUAGE_BUNDLES: true
       CODEQL_ACTION_TEST_MODE: true

.github/workflows/__remote-config.yml

@@ -54,9 +54,9 @@ jobs:
       fail-fast: false
       matrix:
         include:
-          - os: ubuntu-latest
+          - os: ubuntu-26.04
             version: linked
-          - os: ubuntu-latest
+          - os: ubuntu-26.04
             version: nightly-latest
     name: Remote config file
     if: github.triggering_actor != 'dependabot[bot]'

.github/workflows/__resolve-environment-action.yml

@@ -34,11 +34,11 @@ jobs:
       fail-fast: false
       matrix:
         include:
-          - os: ubuntu-latest
+          - os: ubuntu-26.04
             version: linked
-          - os: ubuntu-latest
+          - os: ubuntu-26.04
             version: default
-          - os: ubuntu-latest
+          - os: ubuntu-26.04
             version: nightly-latest
     name: Resolve environment
     if: github.triggering_actor != 'dependabot[bot]'

.github/workflows/__rubocop-multi-language.yml

@@ -1,74 +0,0 @@
-# Warning: This file is generated automatically, and should not be modified.
-# Instead, please modify the template in the pr-checks directory and run:
-#     pr-checks/sync.sh
-# to regenerate this file.
-
-name: PR Check - RuboCop multi-language
-env:
-  GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
-  GO111MODULE: auto
-on:
-  push:
-    branches:
-      - main
-      - releases/v*
-  pull_request: {}
-  merge_group:
-    types:
-      - checks_requested
-  schedule:
-    - cron: '0 5 * * *'
-  workflow_dispatch:
-    inputs: {}
-  workflow_call:
-    inputs: {}
-defaults:
-  run:
-    shell: bash
-concurrency:
-  cancel-in-progress: ${{ github.event_name == 'pull_request' || false }}
-  group: rubocop-multi-language-${{github.ref}}
-jobs:
-  rubocop-multi-language:
-    strategy:
-      fail-fast: false
-      matrix:
-        include:
-          - os: ubuntu-latest
-            version: default
-    name: RuboCop multi-language
-    if: github.triggering_actor != 'dependabot[bot]'
-    permissions:
-      contents: read
-      security-events: read
-    timeout-minutes: 45
-    runs-on: ${{ matrix.os }}
-    steps:
-      - name: Check out repository
-        uses: actions/checkout@3d3c42e5aac5ba805825da76410c181273ba90b1 # v7.0.1
-      - name: Prepare test
-        id: prepare-test
-        uses: ./.github/actions/prepare-test
-        with:
-          version: ${{ matrix.version }}
-          use-all-platform-bundle: 'false'
-          setup-kotlin: 'true'
-      - name: Set up Ruby
-        uses: ruby/setup-ruby@984c0c890880bbf811283d6f09c4607c62d210a4 # v1.323.0
-        with:
-          ruby-version: 2.6
-      - name: Install Code Scanning integration
-        run: bundle add code-scanning-rubocop --version 0.3.0 --skip-install
-      - name: Install dependencies
-        run: bundle install
-      - name: RuboCop run
-        run: |
-          bash -c "
-            bundle exec rubocop --require code_scanning --format CodeScanning::SarifFormatter -o rubocop.sarif
-            [[ $? -ne 2 ]]
-          "
-      - uses: ./../action/upload-sarif
-        with:
-          sarif_file: rubocop.sarif
-    env:
-      CODEQL_ACTION_TEST_MODE: true

.github/workflows/__ruby.yml

@@ -34,17 +34,17 @@ jobs:
       fail-fast: false
       matrix:
         include:
-          - os: ubuntu-latest
+          - os: ubuntu-26.04
             version: linked
-          - os: macos-latest
+          - os: macos-26
             version: linked
-          - os: ubuntu-latest
+          - os: ubuntu-26.04
             version: default
-          - os: macos-latest
+          - os: macos-26
             version: default
-          - os: ubuntu-latest
+          - os: ubuntu-26.04
             version: nightly-latest
-          - os: macos-latest
+          - os: macos-26
             version: nightly-latest
     name: Ruby analysis
     if: github.triggering_actor != 'dependabot[bot]'

.github/workflows/__rust.yml

@@ -34,15 +34,15 @@ jobs:
       fail-fast: false
       matrix:
         include:
-          - os: ubuntu-latest
-            version: stable-v2.19.4
-          - os: ubuntu-latest
+          - os: ubuntu-24.04
+            version: stable-v2.20.7
+          - os: ubuntu-26.04
             version: stable-v2.22.1
-          - os: ubuntu-latest
+          - os: ubuntu-26.04
             version: linked
-          - os: ubuntu-latest
+          - os: ubuntu-26.04
             version: default
-          - os: ubuntu-latest
+          - os: ubuntu-26.04
             version: nightly-latest
     name: Rust analysis
     if: github.triggering_actor != 'dependabot[bot]'

.github/workflows/__split-workflow.yml

@@ -54,17 +54,17 @@ jobs:
       fail-fast: false
       matrix:
         include:
-          - os: ubuntu-latest
+          - os: ubuntu-26.04
             version: linked
-          - os: macos-latest
+          - os: macos-26
             version: linked
-          - os: ubuntu-latest
+          - os: ubuntu-26.04
             version: default
-          - os: macos-latest
+          - os: macos-26
             version: default
-          - os: ubuntu-latest
+          - os: ubuntu-26.04
             version: nightly-latest
-          - os: macos-latest
+          - os: macos-26
             version: nightly-latest
     name: Split workflow
     if: github.triggering_actor != 'dependabot[bot]'

.github/workflows/__start-proxy.yml

@@ -34,11 +34,11 @@ jobs:
       fail-fast: false
       matrix:
         include:
-          - os: ubuntu-latest
+          - os: ubuntu-26.04
             version: linked
-          - os: macos-latest
+          - os: macos-26
             version: linked
-          - os: windows-latest
+          - os: windows-2025
             version: linked
     name: Start proxy
     if: github.triggering_actor != 'dependabot[bot]'

.github/workflows/__submit-sarif-failure.yml

@@ -34,11 +34,11 @@ jobs:
       fail-fast: false
       matrix:
         include:
-          - os: ubuntu-latest
+          - os: ubuntu-26.04
             version: linked
-          - os: ubuntu-latest
+          - os: ubuntu-26.04
             version: default
-          - os: ubuntu-latest
+          - os: ubuntu-26.04
             version: nightly-latest
     name: Submit SARIF after failure
     if: github.triggering_actor != 'dependabot[bot]'
@@ -71,7 +71,9 @@ jobs:
         run: exit 1
       - uses: ./analyze
         # In a real workflow, this step wouldn't run. Since we used `continue-on-error`
-        # above, we manually disable it with an `if` condition.
+        # above, we manually disable it with an `if` condition. Having this step is required
+        # for the init post-action because it checks the workflow definition for e.g. the
+        # `category` input. Without this step, that part of the init post-action would fail.
         if: false
         with:
           category: '/test-codeql-version:${{ matrix.version }}'

.github/workflows/__swift-autobuild.yml

@@ -34,7 +34,7 @@ jobs:
       fail-fast: false
       matrix:
         include:
-          - os: macos-latest-xlarge
+          - os: macos-26-xlarge
             version: nightly-latest
     name: Swift analysis using autobuild
     if: github.triggering_actor != 'dependabot[bot]'

.github/workflows/__swift-custom-build.yml

@@ -54,11 +54,11 @@ jobs:
       fail-fast: false
       matrix:
         include:
-          - os: macos-latest-xlarge
+          - os: macos-26-xlarge
             version: linked
-          - os: macos-latest-xlarge
+          - os: macos-26-xlarge
             version: default
-          - os: macos-latest-xlarge
+          - os: macos-26-xlarge
             version: nightly-latest
     name: Swift analysis using a custom build command
     if: github.triggering_actor != 'dependabot[bot]'

.github/workflows/__unset-environment.yml

@@ -54,9 +54,9 @@ jobs:
       fail-fast: false
       matrix:
         include:
-          - os: ubuntu-latest
+          - os: ubuntu-26.04
             version: linked
-          - os: ubuntu-latest
+          - os: ubuntu-26.04
             version: nightly-latest
     name: Test unsetting environment variables
     if: github.triggering_actor != 'dependabot[bot]'

.github/workflows/__unsupported-macos.yml

@@ -0,0 +1,135 @@
+# Warning: This file is generated automatically, and should not be modified.
+# Instead, please modify the template in the pr-checks directory and run:
+#     pr-checks/sync.sh
+# to regenerate this file.
+
+name: PR Check - Unsupported macOS
+env:
+  GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+  GO111MODULE: auto
+on:
+  push:
+    branches:
+      - main
+      - releases/v*
+  pull_request: {}
+  merge_group:
+    types:
+      - checks_requested
+  schedule:
+    - cron: '0 5 * * *'
+  workflow_dispatch:
+    inputs: {}
+  workflow_call:
+    inputs: {}
+defaults:
+  run:
+    shell: bash
+concurrency:
+  cancel-in-progress: ${{ github.event_name == 'pull_request' || false }}
+  group: unsupported-macos-${{github.ref}}
+jobs:
+  unsupported-macos:
+    strategy:
+      fail-fast: false
+      matrix:
+        include:
+          - os: xcode-27
+            version: linked
+          - os: xcode-27
+            version: nightly-latest
+    name: Unsupported macOS
+    if: github.triggering_actor != 'dependabot[bot]'
+    permissions:
+      contents: read
+      security-events: read
+    timeout-minutes: 45
+    runs-on: ${{ matrix.os }}
+    steps:
+      - name: Check out repository
+        uses: actions/checkout@3d3c42e5aac5ba805825da76410c181273ba90b1 # v7.0.1
+      - name: Install Node.js
+        uses: actions/setup-node@949feb2413d6458794dcd2491c4babbbce0c15c1 # v7.1.0
+        with:
+          node-version: 20.x
+          cache: npm
+      - name: Install newer npm
+        run: npm install -g npm@11.19.1
+      - name: Install dependencies
+        run: npm ci
+      - name: Prepare test
+        id: prepare-test
+        uses: ./.github/actions/prepare-test
+        with:
+          version: ${{ matrix.version }}
+          use-all-platform-bundle: 'false'
+          setup-kotlin: 'true'
+      - name: Check xcode_select_link
+        run: |
+          readlink /private/var/db/xcode_select_link
+          file -h /private/var/db/xcode_select_link
+
+      - uses: ./../action/init
+        id: init
+        continue-on-error: true
+        env:
+          CODEQL_ACTION_CHECK_UNSUPPORTED_TRACED_ANALYSIS: true
+          CODEQL_ACTION_ABORT_UNSUPPORTED_TRACED_ANALYSIS: true
+        with:
+          languages: swift
+          tools: ${{ steps.prepare-test.outputs.tools-url }}
+
+      - name: Analyze
+        # We could run `analyze` here from `./../analyze`, but `getAnalyzeActionName` in `workflow.ts`
+        # can't cope with that unless we introduce a different testing environment. Since this step
+        # would just fail on `xcode-27` anyway, we just skip it instead.
+        if: false
+        uses: ./analyze
+        with:
+          category: '/test-codeql-version:${{ matrix.version }}'
+    env:
+      CODEQL_ACTION_SKIP_GENERATE_FAILED_SARIF: false
+      CODEQL_ACTION_SKIP_SARIF_UPLOAD: true
+      CODEQL_ACTION_TESTING_ENVIRONMENT: codeql-action-pr-checks
+      CODEQL_ACTION_TEST_MODE: true
+  unsupported-macos-sarif-checks:
+    if: github.triggering_actor != 'dependabot[bot]'
+    needs:
+      - unsupported-macos
+    permissions:
+      contents: read
+      security-events: read
+    timeout-minutes: 5
+    runs-on: ubuntu-26.04
+    steps:
+      - name: Check out repository
+        uses: actions/checkout@3d3c42e5aac5ba805825da76410c181273ba90b1 # v7.0.1
+      - name: Install Node.js
+        uses: actions/setup-node@949feb2413d6458794dcd2491c4babbbce0c15c1 # v7.1.0
+        with:
+          node-version: 20.x
+          cache: npm
+      - name: Install newer npm
+        run: npm install -g npm@11.19.1
+      - name: Install dependencies
+        run: npm ci
+      - name: Download workflow artifact
+        uses: actions/download-artifact@3e5f45b2cfb9172054b4087a40e8e0b5a5461e7c # v8.0.1
+        with:
+          pattern: test-mode-sarif-*
+          path: sarif
+
+      - name: List artifact contents
+        run: ls -laR ./sarif
+
+      - name: Check diagnostics appear in SARIF
+        env:
+          SARIF_PATH: "./sarif/"
+          DIAGNOSTIC_ID: "codeql-action/unsupported-traced-analysis-macos"
+          DIAGNOSTIC_NAME: "Traced analysis is not supported on this version of macOS"
+          EXPECTED_LOCATIONS: "0"
+          EXPECTED_MESSAGE: |
+            Traced analysis is not supported on macOS 27 or above.
+        run: npx tsx ./pr-checks/check-diagnostics.ts
+    env:
+      CODEQL_ACTION_TEST_MODE: true

.github/workflows/__upload-ref-sha-input.yml

@@ -54,7 +54,7 @@ jobs:
       fail-fast: false
       matrix:
         include:
-          - os: ubuntu-latest
+          - os: ubuntu-26.04
             version: default
     name: "Upload-sarif: 'ref' and 'sha' from inputs"
     if: github.triggering_actor != 'dependabot[bot]'

.github/workflows/__upload-sarif.yml

@@ -54,13 +54,13 @@ jobs:
       fail-fast: false
       matrix:
         include:
-          - os: ubuntu-latest
+          - os: ubuntu-26.04
             version: default
             analysis-kinds: code-scanning
-          - os: ubuntu-latest
+          - os: ubuntu-26.04
             version: default
             analysis-kinds: code-quality
-          - os: ubuntu-latest
+          - os: ubuntu-26.04
             version: default
             analysis-kinds: code-scanning,code-quality
     name: Test different uses of `upload-sarif`

.github/workflows/__with-checkout-path.yml

@@ -54,7 +54,7 @@ jobs:
       fail-fast: false
       matrix:
         include:
-          - os: ubuntu-latest
+          - os: ubuntu-26.04
             version: linked
     name: Use a custom `checkout_path`
     if: github.triggering_actor != 'dependabot[bot]'

.github/workflows/codeql.yml

@@ -22,7 +22,7 @@ jobs:
   # Identify the CodeQL tool versions to use in the analysis job.
   check-codeql-versions:
     if: github.triggering_actor != 'dependabot[bot]'
-    runs-on: ubuntu-latest
+    runs-on: ubuntu-26.04
     outputs:
       versions: ${{ steps.compare.outputs.versions }}
 
@@ -106,7 +106,7 @@ jobs:
 
   analyze-other:
     if: github.triggering_actor != 'dependabot[bot]'
-    runs-on: ubuntu-latest
+    runs-on: ubuntu-26.04
 
     strategy:
       fail-fast: false

.github/workflows/codescanning-config-cli.yml

@@ -41,11 +41,11 @@ jobs:
       fail-fast: false
       matrix:
         include:
-        - os: ubuntu-latest
+        - os: ubuntu-26.04
           version: linked
-        - os: ubuntu-latest
+        - os: ubuntu-26.04
           version: default
-        - os: ubuntu-latest
+        - os: ubuntu-26.04
           version: nightly-latest
 
     # Code-Scanning config not created because environment variable is not set
@@ -57,7 +57,7 @@ jobs:
       uses: actions/checkout@3d3c42e5aac5ba805825da76410c181273ba90b1 # v7.0.1
 
     - name: Set up Node.js
-      uses: actions/setup-node@820762786026740c76f36085b0efc47a31fe5020 # v7.0.0
+      uses: actions/setup-node@949feb2413d6458794dcd2491c4babbbce0c15c1 # v7.1.0
       with:
         node-version: 24
         cache: 'npm'

.github/workflows/debug-artifacts-failure-safe.yml

@@ -6,13 +6,13 @@ env:
 on:
   push:
     branches:
-    - main
-    - releases/v*
+      - main
+      - releases/v*
   pull_request:
   merge_group:
     types: [checks_requested]
   schedule:
-    - cron: '0 5 * * *'
+    - cron: "0 5 * * *"
   workflow_dispatch:
 
 concurrency:
@@ -30,10 +30,10 @@ jobs:
       fail-fast: false
       matrix:
         version:
-        - stable-v2.20.3
-        - default
-        - linked
-        - nightly-latest
+          - stable-v2.20.7
+          - default
+          - linked
+          - nightly-latest
     name: Upload debug artifacts after failure in analyze
     continue-on-error: true
     env:
@@ -43,7 +43,12 @@ jobs:
       # We currently need `security-events: read` to access feature flags.
       security-events: read
     timeout-minutes: 45
-    runs-on: ubuntu-latest
+
+    # stable-v2.20.7 requires an older version of Java than the default on `ubuntu-latest` (`ubuntu-26.04`).
+    # We could install that older version on the newer runners, or use the older runner.
+    # We do the latter here. This can be removed once we stop supporting `v2.20.7`.
+    runs-on: ${{ case(matrix.version == 'stable-v2.20.7', 'ubuntu-24.04', 'ubuntu-26.04') }}
+
     steps:
       - name: Dump GitHub event
         run: cat "${GITHUB_EVENT_PATH}"
@@ -60,7 +65,7 @@ jobs:
       - name: Install .NET
         uses: actions/setup-dotnet@a98b56852c35b8e3190ac28c8c2271da59106c68 # v6.0.0
         with:
-          dotnet-version: '9.x'
+          dotnet-version: "9.x"
       - name: Assert best-effort artifact scan completed
         uses: ./../action/.github/actions/verify-debug-artifact-scan-completed
       - uses: ./../action/init
@@ -86,12 +91,13 @@ jobs:
     timeout-minutes: 45
     permissions:
       contents: read
-    runs-on: ubuntu-latest
+    runs-on: ubuntu-26.04
     steps:
       - name: Download all artifacts
-        uses: actions/download-artifact@3e5f45b2cfb9172054b4087a40e8e0b5a5461e7c # v8.0.1
+        uses: actions/download-artifact@9000827ccba6bdab643e8b6fd33ac0654aef8333 # v8.0.2
       - name: Check expected artifacts exist
         run: |
+          VERSIONS="stable-v2.20.7 default linked nightly-latest"
           LANGUAGES="cpp csharp go java javascript python"
           for version in $VERSIONS; do
             echo "Artifacts from version $version:"

.github/workflows/debug-artifacts-safe.yml

@@ -5,13 +5,13 @@ env:
 on:
   push:
     branches:
-    - main
-    - releases/v*
+      - main
+      - releases/v*
   pull_request:
   merge_group:
     types: [checks_requested]
   schedule:
-    - cron: '0 5 * * *'
+    - cron: "0 5 * * *"
   workflow_dispatch:
 
 concurrency:
@@ -29,10 +29,10 @@ jobs:
       fail-fast: false
       matrix:
         version:
-        - stable-v2.20.3
-        - default
-        - linked
-        - nightly-latest
+          - stable-v2.20.7
+          - default
+          - linked
+          - nightly-latest
     name: Upload debug artifacts
     env:
       CODEQL_ACTION_TEST_MODE: true
@@ -41,7 +41,12 @@ jobs:
       contents: read
       # We currently need `security-events: read` to access feature flags.
       security-events: read
-    runs-on: ubuntu-latest
+
+    # stable-v2.20.7 requires an older version of Java than the default on `ubuntu-latest` (`ubuntu-26.04`).
+    # We could install that older version on the newer runners, or use the older runner.
+    # We do the latter here. This can be removed once we stop supporting `v2.20.7`.
+    runs-on: ${{ case(matrix.version == 'stable-v2.20.7', 'ubuntu-24.04', 'ubuntu-26.04') }}
+
     steps:
       - name: Check out repository
         uses: actions/checkout@3d3c42e5aac5ba805825da76410c181273ba90b1 # v7.0.1
@@ -56,7 +61,7 @@ jobs:
       - name: Install .NET
         uses: actions/setup-dotnet@a98b56852c35b8e3190ac28c8c2271da59106c68 # v6.0.0
         with:
-          dotnet-version: '9.x'
+          dotnet-version: "9.x"
       - name: Assert best-effort artifact scan completed
         uses: ./../action/.github/actions/verify-debug-artifact-scan-completed
       - uses: ./../action/init
@@ -79,13 +84,13 @@ jobs:
     timeout-minutes: 45
     permissions:
       contents: read
-    runs-on: ubuntu-latest
+    runs-on: ubuntu-26.04
     steps:
       - name: Download all artifacts
-        uses: actions/download-artifact@3e5f45b2cfb9172054b4087a40e8e0b5a5461e7c # v8.0.1
+        uses: actions/download-artifact@9000827ccba6bdab643e8b6fd33ac0654aef8333 # v8.0.2
       - name: Check expected artifacts exist
         run: |
-          VERSIONS="stable-v2.20.3 default linked nightly-latest"
+          VERSIONS="stable-v2.20.7 default linked nightly-latest"
           LANGUAGES="cpp csharp go java javascript python"
           for version in $VERSIONS; do
             pushd "./my-debug-artifacts-${version//./}"

.github/workflows/deflake.yml

@@ -60,7 +60,6 @@ on:
       - "PR Check - Proxy test"
       - "PR Check - Remote config file"
       - "PR Check - Resolve environment"
-      - "PR Check - RuboCop multi-language"
       - "PR Check - Ruby analysis"
       - "PR Check - Rust analysis"
       - "PR Check - Split workflow"

.github/workflows/post-release-mergeback.yml

@@ -10,7 +10,7 @@ on:
   workflow_dispatch:
     inputs:
       baseBranch:
-        description: 'The base branch to merge into'
+        description: "The base branch to merge into"
         default: main
         required: false
 
@@ -24,7 +24,7 @@ defaults:
 
 jobs:
   merge-back:
-    runs-on: ubuntu-latest
+    runs-on: ubuntu-26.04
     environment: Automation
     if: github.repository == 'github/codeql-action'
     env:
@@ -41,16 +41,16 @@ jobs:
 
       - name: Dump GitHub context
         env:
-          GITHUB_CONTEXT: '${{ toJson(github) }}'
+          GITHUB_CONTEXT: "${{ toJson(github) }}"
         run: echo "${GITHUB_CONTEXT}"
 
       - uses: actions/checkout@3d3c42e5aac5ba805825da76410c181273ba90b1 # v7.0.1
         with:
-          fetch-depth: 0  # ensure we have all tags and can push commits
-      - uses: actions/setup-node@820762786026740c76f36085b0efc47a31fe5020 # v7.0.0
+          fetch-depth: 0 # ensure we have all tags and can push commits
+      - uses: actions/setup-node@949feb2413d6458794dcd2491c4babbbce0c15c1 # v7.1.0
         with:
           node-version: 24
-          cache: 'npm'
+          cache: "npm"
 
       - name: Install JavaScript dependencies
         run: npm ci
@@ -134,7 +134,7 @@ jobs:
           echo "::endgroup::"
 
       - name: Generate token
-        uses: actions/create-github-app-token@bcd2ba49218906704ab6c1aa796996da409d3eb1 # v3.2.0
+        uses: actions/create-github-app-token@64ab729a6294000f5aa4a4bc0b73d1f32bc45510 # v3.3.0
         id: app-token
         with:
           app-id: ${{ vars.AUTOMATION_APP_ID }}

.github/workflows/pr-checks.yml

@@ -2,6 +2,9 @@ name: PR Checks
 
 on:
   push:
+    branches:
+      - "main"
+      - "releases/v*"
   pull_request:
   merge_group:
     types: [checks_requested]
@@ -22,7 +25,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        os: [ubuntu-latest, macos-latest, windows-latest]
+        os: [ubuntu-26.04, macos-26, windows-2025]
         node-version: [20, 24]
     permissions:
       contents: read
@@ -42,11 +45,17 @@ jobs:
       - uses: actions/checkout@3d3c42e5aac5ba805825da76410c181273ba90b1 # v7.0.1
 
       - name: Set up Node.js
-        uses: actions/setup-node@820762786026740c76f36085b0efc47a31fe5020 # v7.0.0
+        uses: actions/setup-node@949feb2413d6458794dcd2491c4babbbce0c15c1 # v7.1.0
         with:
           node-version: ${{ matrix.node-version }}
           cache: "npm"
 
+      # Install a new enough version of `npm` to understand `min-release-age`
+      # that is still compatible with Node 20.
+      - name: Install newer npm
+        if: matrix.node-version == 20
+        run: npm install -g npm@11.19.1
+
       - name: Install dependencies
         run: |
           # Use the system Bash shell to ensure we can run commands like `npm ci`
@@ -62,7 +71,7 @@ jobs:
         run: npm test
 
       - name: Lint
-        if: always() && matrix.os != 'windows-latest'
+        if: always() && matrix.os != 'windows-2025'
         run: npm run lint-ci
 
       - name: Upload sarif
@@ -72,7 +81,7 @@ jobs:
         # paired `push` run that the queue branch creates use that ref, so gate on the ref itself
         # rather than the event. The same results are uploaded by the `pull_request` run and again
         # by the `push` run on `main`.
-        if: matrix.os == 'ubuntu-latest' && matrix.node-version == 24 && !startsWith(github.ref, 'refs/heads/gh-readonly-queue/')
+        if: matrix.os == 'ubuntu-26.04' && matrix.node-version == 24 && !startsWith(github.ref, 'refs/heads/gh-readonly-queue/')
         with:
           sarif_file: eslint.sarif
           category: eslint
@@ -84,7 +93,7 @@ jobs:
     if: github.triggering_actor != 'dependabot[bot]'
     permissions:
       contents: read
-    runs-on: ubuntu-latest
+    runs-on: ubuntu-26.04
     timeout-minutes: 10
 
     concurrency:
@@ -95,8 +104,16 @@ jobs:
       - name: Checkout repository
         uses: actions/checkout@3d3c42e5aac5ba805825da76410c181273ba90b1 # v7.0.1
 
+      - name: Check for incorrect addresses in package-lock.json
+        run: |
+          if git grep -nE '(pkgs\.visualstudio\.com|pkgs\.dev\.azure\.com|packagefeedproxy\.microsoft\.io)' -- \
+              'package-lock.json'; then
+            echo "::error::package-lock.json contains internal package feed URLs. Replace them with public registry URLs."
+            exit 1
+          fi
+
       - name: Set up Node.js
-        uses: actions/setup-node@820762786026740c76f36085b0efc47a31fe5020 # v7.0.0
+        uses: actions/setup-node@949feb2413d6458794dcd2491c4babbbce0c15c1 # v7.1.0
         with:
           node-version: 24
           cache: "npm"
@@ -114,9 +131,9 @@ jobs:
         working-directory: pr-checks
         run: npx tsx --test
 
-      - name: Run `pr-checks/changenotes.mts` to ensure that all unreleased change notes are valid
+      - name: Run `pr-checks/changenotes.ts` to ensure that all unreleased change notes are valid
         if: ${{ !cancelled() && steps.install-deps.outcome == 'success' }}
-        run: npx tsx pr-checks/changenotes.mts validate
+        run: npx tsx pr-checks/changenotes.ts validate
 
       - name: Verify all Actions use the same Node version
         id: head-version
@@ -131,12 +148,11 @@ jobs:
 
       - name: Fetch base commit
         id: fetch-base
-        # Forks and Dependabot PRs don't have permission to write comments, so skip the repo size
-        # check in those cases.
+        # Skip this (and subsequent steps) if the PR originates from a fork, since this workflow
+        # won't have the necessary permissions to post comments on the PR.
         if: >-
           github.event_name == 'pull_request' &&
-          github.event.pull_request.head.repo.full_name == github.repository &&
-          github.event.pull_request.user.login != 'dependabot[bot]'
+          github.event.pull_request.head.repo.full_name == github.repository
         env:
           BASE_SHA: ${{ github.event.pull_request.base.sha }}
           HEAD_SHA: ${{ github.event.pull_request.head.sha }}
@@ -161,7 +177,7 @@ jobs:
 
       - name: Upload repo size comment
         if: steps.fetch-base.outcome == 'success'
-        uses: actions/upload-artifact@043fb46d1a93c77aae656e7c1c64a875d1fc6a0a # v7.0.1
+        uses: actions/upload-artifact@cf430e030ddbb5b0abf93d22962f4752f3646cd9 # v7.0.2
         with:
           name: repo-size-comment
           path: ${{ runner.temp }}/repo-size/
@@ -195,7 +211,7 @@ jobs:
     if: >-
       github.event_name == 'pull_request' &&
       github.event.pull_request.head.repo.full_name == github.repository &&
-      github.event.pull_request.user.login != 'dependabot[bot]' &&
+      github.actor != 'dependabot[bot]' &&
       needs.other-checks.result == 'success'
     permissions:
       contents: read
@@ -209,7 +225,7 @@ jobs:
 
     steps:
       - name: Download repo size comment
-        uses: actions/download-artifact@3e5f45b2cfb9172054b4087a40e8e0b5a5461e7c # v8.0.1
+        uses: actions/download-artifact@9000827ccba6bdab643e8b6fd33ac0654aef8333 # v8.0.2
         with:
           name: repo-size-comment
           path: repo-size-comment

.github/workflows/pr-dequeued.yml

@@ -0,0 +1,43 @@
+name: PR dequeued
+
+on:
+  pull_request:
+    types:
+      - dequeued
+
+jobs:
+  notify:
+    name: Notify
+    runs-on: ubuntu-slim
+
+    if: github.event.pull_request.merged != true
+
+    permissions:
+      pull-requests: write
+
+    steps:
+      - name: Notify that the PR was removed from the merge queue
+        env:
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+          PR_NUMBER: ${{ github.event.pull_request.number }}
+          REASON: ${{ github.event.reason }}
+        run: |
+          # Mention whoever added the PR to the merge queue rather than the PR author, who may be a
+          # bot such as Dependabot. The `dequeued` event payload doesn't identify the enqueuer, so
+          # look them up in the most recent `AddedToMergeQueueEvent` on the PR's timeline.
+          enqueuer=$(gh api graphql \
+            -F number="$PR_NUMBER" \
+            -f query='
+              query($number: Int!) {
+                repository(owner: "github", name: "codeql-action") {
+                  pullRequest(number: $number) {
+                    timelineItems(itemTypes: [ADDED_TO_MERGE_QUEUE_EVENT], last: 1) {
+                      nodes { ... on AddedToMergeQueueEvent { enqueuer { login } } }
+                    }
+                  }
+                }
+              }' \
+            --jq '.data.repository.pullRequest.timelineItems.nodes[0].enqueuer.login')
+          echo "@$enqueuer The pull request was removed from the merge queue (\`$REASON\`)." \
+            "Please resolve any issues if required and enqueue the PR again." |
+            gh pr comment --body-file - --repo github/codeql-action "$PR_NUMBER"

.github/workflows/prepare-release.yml

@@ -28,8 +28,8 @@ defaults:
 
 jobs:
   prepare:
-    name: "Prepare release"
-    runs-on: ubuntu-latest
+    name: "Release info"
+    runs-on: ubuntu-26.04
     if: github.repository == 'github/codeql-action'
 
     permissions:

.github/workflows/python312-windows.yml

@@ -29,10 +29,10 @@ jobs:
       contents: read
       # We currently need `security-events: read` to access feature flags.
       security-events: read
-    runs-on: windows-latest
+    runs-on: windows-2025
 
     steps:
-    - uses: actions/setup-python@5fda3b95a4ea91299a34e894583c3862153e4b97 # v7.0.0
+    - uses: actions/setup-python@6d4fd22b20465ccc0f7354476588e8df7c9ca0e0 # v7.1.0
       with:
         python-version: 3.12
 

.github/workflows/query-filters.yml

@@ -25,7 +25,7 @@ jobs:
     name: Query Filters Tests
     if: github.triggering_actor != 'dependabot[bot]'
     timeout-minutes: 45
-    runs-on: ubuntu-latest
+    runs-on: ubuntu-26.04
     permissions:
       contents: read # This permission is needed to allow the GitHub Actions workflow to read the contents of the repository.
     steps:
@@ -33,7 +33,7 @@ jobs:
       uses: actions/checkout@3d3c42e5aac5ba805825da76410c181273ba90b1 # v7.0.1
 
     - name: Install Node.js
-      uses: actions/setup-node@820762786026740c76f36085b0efc47a31fe5020 # v7.0.0
+      uses: actions/setup-node@949feb2413d6458794dcd2491c4babbbce0c15c1 # v7.1.0
       with:
         node-version: 24
         cache: npm

.github/workflows/rebuild.yml

@@ -12,7 +12,7 @@ defaults:
 jobs:
   rebuild:
     name: Rebuild Action
-    runs-on: ubuntu-latest
+    runs-on: ubuntu-26.04
     if: github.event.label.name == 'Rebuild' || github.event_name == 'workflow_dispatch'
 
     env:
@@ -30,10 +30,10 @@ jobs:
           ref: ${{ env.HEAD_REF }}
 
       - name: Set up Node.js
-        uses: actions/setup-node@820762786026740c76f36085b0efc47a31fe5020 # v7.0.0
+        uses: actions/setup-node@949feb2413d6458794dcd2491c4babbbce0c15c1 # v7.1.0
         with:
           node-version: 24
-          cache: 'npm'
+          cache: "npm"
 
       - name: Remove label
         if: github.event_name == 'pull_request'
@@ -54,32 +54,27 @@ jobs:
         run: |
           git fetch origin "$BASE_BRANCH"
 
-          # Allow merge conflicts in `lib`, since rebuilding should resolve them.
-          git merge "origin/$BASE_BRANCH"
-          MERGE_RESULT=$?
-
-          if [ "$MERGE_RESULT" -eq 0 ]; then
+          # Allow merge conflicts in `lib`, since rebuilding should resolve them. Conflicts leave the
+          # merge in progress, so check for `MERGE_HEAD` to tell them apart from failures that don't.
+          if git merge "origin/$BASE_BRANCH"; then
             echo "Merge succeeded cleanly."
-          elif [ "$MERGE_RESULT" -eq 1 ]; then
-            echo "Merge conflicts detected (exit code $MERGE_RESULT), continuing."
-          else
-            echo "git merge failed with unexpected exit code $MERGE_RESULT."
-            exit 1
-          fi
-
-          if [ "$MERGE_RESULT" -ne 0 ]; then
+          elif git rev-parse --verify MERGE_HEAD >/dev/null 2>&1; then
+            echo "Merge conflicts detected, continuing."
             echo "merge-in-progress=true" >> $GITHUB_OUTPUT
 
-            # Check for merge conflicts outside of `lib`. Disable git diff's trailing whitespace check
-            # since `node_modules/@types/semver/README.md` fails it.
-            if git -c core.whitespace=-trailing-space diff --check | grep --invert-match '^lib/'; then
+            # Check for merge conflicts outside of `lib`.
+            CONFLICTS_OUTSIDE_LIB=$(git diff --name-only --diff-filter=U | grep --invert-match '^lib/' || true)
+            if [ -n "$CONFLICTS_OUTSIDE_LIB" ]; then
               echo "Merge conflicts were detected outside of the lib directory. Please resolve them manually."
-              git -c core.whitespace=-trailing-space diff --check | grep --invert-match '^lib/' || true
+              echo "$CONFLICTS_OUTSIDE_LIB"
               exit 1
             fi
 
             echo "No merge conflicts found outside the lib directory. We should be able to resolve all of" \
               "these by rebuilding the Action."
+          else
+            echo "git merge failed for a reason other than merge conflicts."
+            exit 1
           fi
 
       - name: Compile TypeScript

.github/workflows/rollback-release.yml

@@ -10,8 +10,7 @@ on:
         required: true
   # Only for dry-runs of changes to the workflow.
   push:
-    # Don't run dry-run on release branches, to avoid an issue where the
-    # "new" tag determined by the "Prepare release" job already exists.
+    # Don't run dry-run on release branches, since that's unnecessary.
     branches-ignore:
       - releases/v*
     paths:
@@ -24,7 +23,7 @@ defaults:
 
 jobs:
   prepare:
-    name: "Prepare release"
+    name: "Prepare"
     if: github.repository == 'github/codeql-action'
 
     permissions:
@@ -35,7 +34,7 @@ jobs:
   rollback:
     name: "Create rollback release"
     if: github.repository == 'github/codeql-action'
-    runs-on: ubuntu-latest
+    runs-on: ubuntu-26.04
     timeout-minutes: 45
 
     # Don't set the deployment environment for test runs
@@ -107,8 +106,10 @@ jobs:
           # We usually expect to checkout `inputs.rollback-tag` (required for `workflow_dispatch`),
           # but use `v0.0.0` for testing.
           ROLLBACK_TAG: ${{ inputs.rollback-tag || 'v0.0.0' }}
-          RELEASE_TAG: ${{ needs.prepare.outputs.version }}
-          MAJOR_VERSION_TAG: ${{ needs.prepare.outputs.major_version }}
+          # Use `needs.prepare.outputs.version` for actual runs and `v0.0.1` for testing.
+          RELEASE_TAG: ${{ case(github.event_name == 'workflow_dispatch', needs.prepare.outputs.version, 'v0.0.1') }}
+          # Use `needs.prepare.outputs.major_version` for actual runs and `v0` for testing.
+          MAJOR_VERSION_TAG: ${{ case(github.event_name == 'workflow_dispatch', needs.prepare.outputs.major_version, 'v0') }}
         run: |
           git checkout "refs/tags/${ROLLBACK_TAG}"
           git tag --annotate "${RELEASE_TAG}" --message "${RELEASE_TAG}"
@@ -138,7 +139,7 @@ jobs:
 
       - name: Generate token
         if: github.event_name == 'workflow_dispatch'
-        uses: actions/create-github-app-token@bcd2ba49218906704ab6c1aa796996da409d3eb1 # v3.2.0
+        uses: actions/create-github-app-token@64ab729a6294000f5aa4a4bc0b73d1f32bc45510 # v3.3.0
         id: app-token
         with:
           app-id: ${{ vars.AUTOMATION_APP_ID }}
@@ -184,4 +185,3 @@ jobs:
           # Setting this to `true` for non-workflow_dispatch events will
           # still push the `branch`, but won't create a corresponding PR
           dry-run: "${{ github.event_name != 'workflow_dispatch' }}"
-

.github/workflows/test-codeql-bundle-all.yml

@@ -27,7 +27,7 @@ jobs:
       fail-fast: false
       matrix:
         include:
-        - os: ubuntu-latest
+        - os: ubuntu-26.04
           version: nightly-latest
     name: 'CodeQL Bundle All'
     if: github.triggering_actor != 'dependabot[bot]'

.github/workflows/update-bundle.yml

@@ -20,7 +20,7 @@ defaults:
 jobs:
   update-bundle:
     if: github.event.release.prerelease && startsWith(github.event.release.tag_name, 'codeql-bundle-')
-    runs-on: ubuntu-latest
+    runs-on: ubuntu-26.04
     permissions:
       contents: write # needed to push commits
       pull-requests: write # needed to create pull requests
@@ -41,7 +41,7 @@ jobs:
           git config --global user.name "github-actions[bot]"
 
       - name: Set up Node.js
-        uses: actions/setup-node@820762786026740c76f36085b0efc47a31fe5020 # v7.0.0
+        uses: actions/setup-node@949feb2413d6458794dcd2491c4babbbce0c15c1 # v7.1.0
         with:
           node-version: 24
           cache: 'npm'

.github/workflows/update-release-branch.yml

@@ -16,17 +16,17 @@ defaults:
     shell: bash
 
 jobs:
-
   prepare:
-    name: "Prepare release"
+    name: "Prepare"
     permissions:
       contents: read
 
     uses: ./.github/workflows/prepare-release.yml
 
   update:
+    name: "Update release branch"
     timeout-minutes: 45
-    runs-on: ubuntu-latest
+    runs-on: ubuntu-26.04
     if: github.event_name == 'workflow_dispatch'
     needs: [prepare]
     env:
@@ -77,8 +77,9 @@ jobs:
           --conductor ${GITHUB_ACTOR}
 
   backport:
+    name: "Create backport"
     timeout-minutes: 45
-    runs-on: ubuntu-latest
+    runs-on: ubuntu-26.04
     environment: Automation
     needs: [prepare]
     if: ${{ (github.event_name == 'push') && needs.prepare.outputs.backport_target_branches != '[]' }}
@@ -94,7 +95,7 @@ jobs:
       pull-requests: write # needed to create pull request
     steps:
     - name: Generate token
-      uses: actions/create-github-app-token@bcd2ba49218906704ab6c1aa796996da409d3eb1 # v3.2.0
+      uses: actions/create-github-app-token@64ab729a6294000f5aa4a4bc0b73d1f32bc45510 # v3.3.0
       id: app-token
       with:
         app-id: ${{ vars.AUTOMATION_APP_ID }}

.github/workflows/update-supported-enterprise-server-versions.yml

@@ -26,7 +26,7 @@ jobs:
         uses: actions/checkout@3d3c42e5aac5ba805825da76410c181273ba90b1 # v7.0.1
 
       - name: Set up Node.js
-        uses: actions/setup-node@820762786026740c76f36085b0efc47a31fe5020 # v7.0.0
+        uses: actions/setup-node@949feb2413d6458794dcd2491c4babbbce0c15c1 # v7.1.0
         with:
           node-version: 24
           cache: 'npm'

.npmrc

@@ -1 +1,2 @@
 lockfile-version=3
+min-release-age=7

.vscode/settings.json

@@ -7,6 +7,10 @@
     // transpiled JavaScript
     "build": true,
     "lib": true,
+
+    // exclude "tests" by default because it causes VSCode to start language-specific extensions
+    // that are not typically needed during development (or indeed may not work correctly)
+    "tests": true
   },
   "search.exclude": {
     "**/node_modules": true,
@@ -18,7 +22,7 @@
   "git.ignoreLimitWarning": true,
   // Use the vendored TypeScript version to have a consistent development experience across
   // machines.
-  "typescript.tsdk": "node_modules/typescript/lib",
+  "js/ts.tsdk.path": "node_modules/typescript/lib",
   "[typescript]": {
     "editor.defaultFormatter": "esbenp.prettier-vscode"
   },

CHANGELOG.md

@@ -2,6 +2,27 @@
 
 See the [releases page](https://github.com/github/codeql-action/releases) for the relevant changes to the CodeQL CLI and language packs.
 
+## [UNRELEASED]
+
+No user facing changes.
+
+## 4.39.1 - 21 Oct 2026
+
+- Update default CodeQL bundle version to [2.27.3](https://github.com/github/codeql-action/releases/tag/codeql-bundle-v2.27.3). [#4256](https://github.com/github/codeql-action/pull/4256)
+
+## 4.39.0 - 15 Oct 2026
+
+- _Breaking change_: Bump the minimum required CodeQL bundle version to 2.20.7. [#4205](https://github.com/github/codeql-action/pull/4205)
+- The `codeql-action/analyze` step now validates that a correct argument for the `checkout_path` input has been provided. The `checkout_path` input must be set to the path where the repository that is being analyzed is checked out at on the runner, if that path is something other than the workspace root. If the path does not point to a repository checkout or is different from the path that was used by `codeql-action/init`, then the CodeQL Action now produces a warning. [#4148](https://github.com/github/codeql-action/pull/4148)
+- Resolved an issue with third-party caching implementations that prevented caches from being restored correctly. [#4206](https://github.com/github/codeql-action/pull/4206)
+- The `codeql-action/start-proxy` step that is used in Code Scanning Default Setup now finds CodeQL releases using the same logic as `codeql-action/init`. This primarily benefits customers who are using GitHub instances other than `github.com` where the `codeql-action/start-proxy` step may previously have been unable to locate recent releases and ended up using outdated versions of the private registry authentication proxy as a result. [#4198](https://github.com/github/codeql-action/pull/4198)
+
+## 4.38.3 - 08 Oct 2026
+
+- _Upcoming breaking change_: CodeQL version 2.21.2 and earlier were discontinued on 24 September 2026 alongside GitHub Enterprise Server 3.17, and will be unsupported by the next minor release of the CodeQL Action. Added a deprecation warning for customers using these versions of CodeQL. [#4188](https://github.com/github/codeql-action/pull/4188)
+- Update default CodeQL bundle version to [2.27.2](https://github.com/github/codeql-action/releases/tag/codeql-bundle-v2.27.2). [#4203](https://github.com/github/codeql-action/pull/4203)
+- Fixed a bug where the decision of whether to use a per-language bundle did not account for custom configurations that reference queries outside of compiled CodeQL packs. This issue was caught during internal testing and did not affect any customer repositories. We will resume the roll out of per-language bundles in the coming weeks. [#4184](https://github.com/github/codeql-action/pull/4184)
+
 ## 4.38.2 - 24 Sept 2026
 
 - Update default CodeQL bundle version to [2.27.1](https://github.com/github/codeql-action/releases/tag/codeql-bundle-v2.27.1). [#4160](https://github.com/github/codeql-action/pull/4160)

CONTRIBUTING.md

@@ -53,6 +53,7 @@ Here are a few things you can do that will increase the likelihood of your pull
 - Write tests.
 - Keep your change as focused as possible. If there are multiple changes you would like to make that are not dependent upon each other, consider submitting them as separate pull requests.
 - Write a [good commit message](http://tbaggery.com/2008/04/19/a-note-about-git-commit-messages.html).
+- For user-facing changes, add a change-note file. See [unreleased-change-notes/README.md](unreleased-change-notes/README.md).
 
 ## Releasing (write access required)
 

README.md

@@ -72,12 +72,10 @@ We typically release new minor versions of the CodeQL Action and Bundle when a n
 
 | Minimum CodeQL Action | Minimum CodeQL Bundle Version | GitHub Environment | Notes |
 |-----------------------|-------------------------------|--------------------|-------|
+| `v4.36.2` | `2.25.6` | Enterprise Server 3.22 | |
 | `v4.33.0` | `2.24.3` | Enterprise Server 3.21 | |
 | `v4.31.10` | `2.23.9` | Enterprise Server 3.20 | |
 | `v3.29.11` | `2.22.4` | Enterprise Server 3.19 | |
-| `v3.28.21` | `2.21.3` | Enterprise Server 3.18 | |
-| `v3.28.12` | `2.20.7` | Enterprise Server 3.17 | |
-| `v3.28.6` | `2.20.3` | Enterprise Server 3.16 | |
 
 See the full list of GHES release and deprecation dates at [GitHub Enterprise Server releases](https://docs.github.com/en/enterprise-server/admin/all-releases#releases-of-github-enterprise-server).
 

ava.setup.mjs

@@ -1,3 +1,4 @@
 import pkg from "./package.json" with { type: "json" };
 
 globalThis.__CODEQL_ACTION_VERSION__ = pkg.version;
+globalThis.__CODEQL_ACTION_TEST_ENV__ = "unit-test";

build.mjs

@@ -78,7 +78,7 @@ const UPLOAD_LIB_SRC = "./src/upload-lib";
  *
  * The virtual module additionally re-exports `upload-lib` under the `uploadLib` namespace so that
  * external consumers can access it via the small `lib/upload-lib.js` stub emitted below.
- * 
+ *
  * A tiny stub file is emitted for each Action entrypoint, and one for `upload-lib`. Each stub
  * imports the shared bundle and calls/re-exports from the respective entry point.
  *
@@ -212,6 +212,7 @@ const context = await esbuild.context({
   target: ["node20"],
   define: {
     __CODEQL_ACTION_VERSION__: JSON.stringify(pkg.version),
+    __CODEQL_ACTION_TEST_ENV__: JSON.stringify(""),
   },
   metafile: true,
 });

eslint.config.mjs

@@ -140,6 +140,17 @@ export default [
       "no-async-foreach/no-async-foreach": "error",
       "no-sequences": "error",
       "no-shadow": "off",
+
+      // A basic check that we don't use `exportVariable` from `@actions/core`.
+      "no-restricted-syntax": [
+        "error",
+        {
+          selector: "MemberExpression[property.name='exportVariable']",
+          message:
+            "Use the `export` method of an `Env` instance or `exportEnvVar` from `environment.ts` instead.",
+        },
+      ],
+
       // This is overly restrictive with unsetting `EnvVar`s
       "@typescript-eslint/no-dynamic-delete": "off",
       "@typescript-eslint/no-shadow": "error",
@@ -158,7 +169,16 @@ export default [
     },
   },
   {
-    files: ["**/*.ts", "**/*.js", "**/*.mts"],
+    files: ["src/environment.ts"],
+
+    // We allow `exportVariable` from `@actions/core` to be used in this file
+    // since it defines the wrapper around it that other modules use.
+    rules: {
+      "no-restricted-syntax": "off",
+    },
+  },
+  {
+    files: ["**/*.ts", "**/*.js"],
 
     rules: {
       "@typescript-eslint/no-explicit-any": "off",
@@ -180,7 +200,7 @@ export default [
     },
   },
   {
-    files: ["pr-checks/**/*.ts", "pr-checks/**/*.mts"],
+    files: ["pr-checks/**/*.ts"],
 
     languageOptions: {
       parserOptions: {

init/action.yml

@@ -153,7 +153,10 @@ inputs:
     required: false
   trap-caching:
     description: >-
-      Explicitly enable or disable TRAP caching rather than respecting the feature flag for it.
+      Explicitly enable or disable TRAP caching instead of using the automatically determined default.
+      TRAP caching is disabled by default when improved incremental analysis is enabled,
+      because improved incremental analysis of a pull request only extracts changed files,
+      which rarely benefit from TRAP caching.
     required: false
   dependency-caching:
     description: >-

lib/defaults.json

@@ -1,6 +1,6 @@
 {
-  "bundleVersion": "codeql-bundle-v2.27.1",
-  "cliVersion": "2.27.1",
-  "priorBundleVersion": "codeql-bundle-v2.27.0",
-  "priorCliVersion": "2.27.0"
+  "bundleVersion": "codeql-bundle-v2.27.3",
+  "cliVersion": "2.27.3",
+  "priorBundleVersion": "codeql-bundle-v2.27.2",
+  "priorCliVersion": "2.27.2"
 }

package.json

@@ -1,6 +1,6 @@
 {
   "name": "codeql",
-  "version": "4.38.2",
+  "version": "4.39.2",
   "private": true,
   "description": "CodeQL action",
   "scripts": {
@@ -22,7 +22,7 @@
   "dependencies": {
     "@actions/artifact": "^5.0.3",
     "@actions/artifact-legacy": "npm:@actions/artifact@^1.1.2",
-    "@actions/cache": "^5.2.0",
+    "@actions/cache": "^5.3.0",
     "@actions/core": "^2.0.3",
     "@actions/exec": "^2.0.0",
     "@actions/github": "^8.0.1",
@@ -31,21 +31,20 @@
     "@actions/io": "^2.0.0",
     "@actions/tool-cache": "^3.0.1",
     "@octokit/core": "^7.0.8",
-    "@octokit/plugin-paginate-rest": "^15.0.0",
+    "@octokit/plugin-paginate-rest": "^16.0.0",
     "@octokit/plugin-rest-endpoint-methods": "^18.0.0",
     "@octokit/plugin-retry": "^8.1.1",
     "archiver": "^8.0.0",
-    "fast-deep-equal": "^3.1.3",
-    "follow-redirects": "^1.16.0",
+    "follow-redirects": "^1.16.1",
     "get-folder-size": "^5.0.0",
     "https-proxy-agent": "^7.0.6",
-    "js-yaml": "^5.4.2",
+    "js-yaml": "^5.5.0",
     "jsonschema": "1.5.0",
     "long": "^5.3.2",
     "node-forge": "^1.4.0",
     "semver": "^7.8.5",
-    "uuid": "^14.0.2",
-    "undici": "^6.28.0"
+    "undici": "^7.30.1",
+    "uuid": "^14.0.3"
   },
   "devDependencies": {
     "@ava/typescript": "6.0.0",
@@ -59,21 +58,21 @@
     "@types/node-forge": "^1.3.14",
     "@types/sarif": "^2.1.7",
     "@types/semver": "^7.8.0",
-    "@types/sinon": "^22.0.0",
+    "@types/sinon": "^22.0.1",
     "ava": "^6.4.1",
     "esbuild": "^0.28.2",
     "eslint": "^9.39.5",
     "eslint-import-resolver-typescript": "^4.4.5",
     "eslint-plugin-github": "^6.1.2",
     "eslint-plugin-import-x": "^4.17.1",
-    "eslint-plugin-jsdoc": "^64.5.2",
+    "eslint-plugin-jsdoc": "^65.4.0",
     "eslint-plugin-no-async-foreach": "^0.1.1",
     "glob": "^13.0.6",
-    "globals": "^17.12.0",
+    "globals": "^17.13.0",
     "nock": "^14.0.17",
     "sinon": "^22.1.0",
     "typescript": "^6.0.3",
-    "typescript-eslint": "^8.70.0"
+    "typescript-eslint": "^8.72.0"
   },
   "overrides": {
     "@actions/tool-cache": {
@@ -95,6 +94,6 @@
       "semver": ">=6.3.1"
     },
     "glob": "^13.0.6",
-    "undici": "^6.28.0"
+    "undici": "^7.30.1"
   }
 }

pr-checks/.nvmrc

@@ -0,0 +1 @@
+24

pr-checks/bundle-changelog.ts

@@ -122,6 +122,6 @@ function main() {
 }
 
 // Only call `main` if this script was run directly.
-if (require.main === module) {
+if (import.meta.main) {
   process.exit(main());
 }

pr-checks/bundle-metadata.ts

@@ -43,6 +43,6 @@ async function main() {
 }
 
 // Only call `main` if this script was run directly.
-if (require.main === module) {
+if (import.meta.main) {
   void main();
 }

pr-checks/changelog/validate.test.ts

@@ -9,7 +9,7 @@ import {
   isValidChangenoteFile,
   isValidChangenoteFilename,
   VALID_CHANGE_NOTE_CATEGORIES,
-} from "./validate.mjs";
+} from "./validate";
 
 await describe("isValidChangenoteContent", async () => {
   await it("recognizes an unordered Markdown list", () => {
@@ -154,26 +154,6 @@ await describe("isValidChangenoteFile", async () => {
     assert.equal(isValidChangenoteFile("non-existent-file.md"), false);
   });
 
-  await it("rejects invalid filename", async () => {
-    await withTmpFile(
-      "fix-bug.md",
-      "---\ncategory: fix\n---\n- Fixed a bug\n",
-      (filePath) => {
-        assert.equal(isValidChangenoteFile(filePath), false);
-      },
-    );
-  });
-
-  await it("rejects missing frontmatter", async () => {
-    await withTmpFile(
-      "2026-01-01-fix-bug.md",
-      "- Fixed a bug\n",
-      (filePath) => {
-        assert.equal(isValidChangenoteFile(filePath), false);
-      },
-    );
-  });
-
   await it("rejects invalid Markdown", async () => {
     await withTmpFile(
       "2026-01-01-fix-bug.md",

pr-checks/changelog/validate.ts

@@ -1,5 +1,4 @@
 import * as fs from "node:fs";
-import * as path from "node:path";
 
 import { matter } from "lite-matter";
 import type { List, ListItem } from "mdast";
@@ -95,21 +94,7 @@ export function isValidChangenoteFile(filename: string): boolean {
     return false;
   }
 
-  const { data: frontmatter, content } = matter(fileData);
-
-  if (!isValidChangenoteFilename(path.basename(filename))) {
-    isValid = false;
-    console.error(
-      `${filename}: invalid filename; must match pattern YYYY-MM-DD-id.md`,
-    );
-  }
-  if (!hasValidChangenoteCategory(frontmatter)) {
-    isValid = false;
-    const categories = Object.keys(VALID_CHANGE_NOTE_CATEGORIES).join(", ");
-    console.error(
-      `${filename}: invalid category; must be one of: ${categories}`,
-    );
-  }
+  const { content } = matter(fileData);
   if (!isValidChangenoteContent(content)) {
     isValid = false;
     console.error(

pr-checks/changenotes.ts

@@ -14,7 +14,7 @@ import {
   renderChangelog,
   withChangelog,
 } from "./changelog";
-import { isValidChangenoteFile } from "./changelog/validate.mjs";
+import { isValidChangenoteFile } from "./changelog/validate";
 import { CHANGENOTES_DIR } from "./config";
 
 /**
@@ -28,12 +28,12 @@ interface ChangenoteFile {
 
 /**
  * Returns the absolute file paths of all files in
- * {@link CHANGENOTES_DIR} (except ".gitkeep").
+ * {@link CHANGENOTES_DIR} (except ".gitkeep" and "README.md").
  * */
 function listUnreleasedChangenoteDir(): string[] {
   return fs
     .readdirSync(CHANGENOTES_DIR)
-    .filter((name) => name !== ".gitkeep")
+    .filter((name) => ![".gitkeep", "README.md"].includes(name))
     .map((name) => path.join(CHANGENOTES_DIR, name));
 }
 
@@ -50,6 +50,28 @@ function getChangenotes(): ChangenoteFile[] {
   });
 }
 
+/**
+ * Populates the '[UNRELEASED]' section of CHANGELOG.md with the contents
+ * of the changenotes in {@link CHANGENOTES_DIR} and then deletes those changenotes.
+ * @param contents The contents of CHANGELOG.md
+ * @returns The updated contents of CHANGELOG.md
+ */
+export function transferChangenotesToChangelog(contents: string): string {
+  const changenotes = getChangenotes();
+  const changenoteBodies = changenotes.map((c) => c.content.trim());
+  const changenotePaths = changenotes.map((c) => c.absolutePath);
+
+  const changelog = parseChangelog(contents);
+  addBodyLinesToUnreleasedSection(changelog, changenoteBodies);
+  const updatedChangelog = renderChangelog(changelog);
+
+  for (const p of changenotePaths) {
+    fs.unlinkSync(p);
+  }
+
+  return updatedChangelog;
+}
+
 const entryPoint = process.argv[1];
 if (entryPoint && import.meta.url === pathToFileURL(entryPoint).href) {
   try {
@@ -82,35 +104,22 @@ function main(): ExitCode {
 
 function usage(): ExitCode {
   const message =
-    "Usage: changenotes.mts assemble\n" +
-    "       changenotes.mts validate\n" +
-    "       changenotes.mts help";
+    "Usage: changenotes.ts assemble\n" +
+    "       changenotes.ts validate\n" +
+    "       changenotes.ts help";
   console.log(message);
   return ExitCode.Success;
 }
 
 function assemble(): ExitCode {
   try {
-    const changenotes = getChangenotes();
-    const changenoteBodies = changenotes.map((c) => c.content);
-    const changenotePaths = changenotes.map((c) => c.absolutePath);
-
     withChangelog((contents) => {
-      const changelog = parseChangelog(contents);
-      addBodyLinesToUnreleasedSection(changelog, changenoteBodies);
-      return renderChangelog(changelog);
+      return transferChangenotesToChangelog(contents);
     }, {});
-
-    // Delete changenotes only after successful processing.
-    for (const p of changenotePaths) {
-      fs.unlinkSync(p);
-    }
-
     return ExitCode.Success;
   } catch (e) {
     console.error("Failed to assemble changenotes to 'CHANGELOG.md'", e);
   }
-
   return ExitCode.Failure;
 }
 

pr-checks/check-diagnostics.ts

@@ -0,0 +1,118 @@
+import fs from "fs";
+import path from "path";
+
+import * as core from "@actions/core";
+import { globSync } from "glob";
+
+import * as sarif from "../src/sarif";
+
+const DIAGNOSTIC_ID =
+  process.env["DIAGNOSTIC_ID"] ?? "lang/diagnostics/example";
+const DIAGNOSTIC_NAME = process.env["DIAGNOSTIC_NAME"] ?? "Diagnostic name";
+const EXPECTED_MESSAGE = process.env["EXPECTED_MESSAGE"] ?? "Plaintext message";
+const EXPECTED_LOCATIONS = Number.parseInt(
+  process.env["EXPECTED_LOCATIONS"] ?? "1",
+);
+
+function checkStatusPageNotification(n: sarif.Notification) {
+  const expectedMessage = EXPECTED_MESSAGE.trim();
+  if (!n.message.text?.includes(expectedMessage)) {
+    if (n.message.text !== undefined) {
+      core.setFailed(
+        `Expected the status page diagnostic to contain the message '${expectedMessage}', but found '${n.message.text.replaceAll("\n", "\\n")}'.`,
+      );
+    } else {
+      core.setFailed(
+        `Expected the status page diagnostic to contain the message '${expectedMessage}', but found nothing.`,
+      );
+    }
+  }
+
+  const locationCount = n.locations?.length ?? 0;
+  if (locationCount !== EXPECTED_LOCATIONS) {
+    core.setFailed(
+      `Expected the status page diagnostic to have exactly ${EXPECTED_LOCATIONS} location(s), but found ${locationCount}.`,
+    );
+  }
+}
+
+function checkSarif(sarifFile: string) {
+  core.info(`Checking SARIF file at '${sarifFile}'`);
+
+  const log = JSON.parse(fs.readFileSync(sarifFile, "utf8")) as sarif.Log;
+  const run = log.runs[0];
+
+  if (run.invocations === undefined) {
+    throw new Error("run.invocations is undefined");
+  }
+
+  const toolExecutionNotifications =
+    run.invocations[0].toolExecutionNotifications;
+
+  if (toolExecutionNotifications === undefined) {
+    throw new Error("toolExecutionNotifications is undefined");
+  }
+
+  const statusPageNotifications = toolExecutionNotifications.filter(
+    (n) =>
+      n.descriptor?.id === DIAGNOSTIC_ID &&
+      n.properties?.visibility?.statusPage,
+  );
+  if (statusPageNotifications.length !== 1) {
+    core.setFailed(
+      "Expected exactly one status page reporting descriptor for this diagnostic in the " +
+        `'runs[].invocations[].toolExecutionNotifications[]' SARIF property, but found ` +
+        `${statusPageNotifications.length}. All notification reporting descriptors: ` +
+        `${JSON.stringify(toolExecutionNotifications)}.`,
+    );
+  }
+  checkStatusPageNotification(statusPageNotifications[0]);
+
+  const notifications = run.tool.driver.notifications;
+
+  if (notifications === undefined) {
+    throw new Error("notifications is undefined");
+  }
+
+  const diagnosticNotification = notifications.filter(
+    (n) =>
+      n.id === DIAGNOSTIC_ID &&
+      n.name === DIAGNOSTIC_ID &&
+      n.fullDescription?.text === DIAGNOSTIC_NAME,
+  );
+  if (diagnosticNotification.length !== 1) {
+    core.setFailed(
+      "Expected exactly one notification for this diagnostic in the " +
+        `'runs[].tool.driver.notifications[]' SARIF property, but found ` +
+        `${diagnosticNotification.length}. All notifications: ` +
+        `${JSON.stringify(notifications)}.`,
+    );
+  }
+}
+
+const sarifPath = process.env["SARIF_PATH"];
+
+if (sarifPath === undefined) {
+  throw new Error(
+    "The path to a SARIF file or directory must be set in 'SARIF_PATH'.",
+  );
+}
+
+if (fs.statSync(sarifPath).isDirectory()) {
+  const sarifFiles = globSync("**/*.sarif", {
+    cwd: path.resolve(sarifPath),
+    absolute: true,
+  });
+
+  if (sarifFiles.length < 1) {
+    throw new Error(`Unable to find any .sarif files in '${sarifPath}'.`);
+  }
+
+  for (const sarifFile of sarifFiles) {
+    checkSarif(sarifFile);
+  }
+} else {
+  checkSarif(sarifPath);
+}
+
+core.info("Finished diagnostic export test");