Merge releases/v4 into releases/v3

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

@@ -30,7 +30,7 @@ jobs:
       fail-fast: false
       matrix:
         version:
-        - stable-v2.20.3
+        - stable-v2.20.7
         - default
         - linked
         - nightly-latest

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

@@ -29,7 +29,7 @@ jobs:
       fail-fast: false
       matrix:
         version:
-        - stable-v2.20.3
+        - stable-v2.20.7
         - default
         - linked
         - nightly-latest
@@ -85,7 +85,7 @@ jobs:
         uses: actions/download-artifact@3e5f45b2cfb9172054b4087a40e8e0b5a5461e7c # v8.0.1
       - 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//./}"

CHANGELOG.md

@@ -2,6 +2,13 @@
 
 See the [releases page](https://github.com/github/codeql-action/releases) for the relevant changes to the CodeQL CLI and language packs.
 
+## 3.39.0 - 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where the `codeql-action/start-proxy` step may previously have been unable to locate recent releases and ended up using outdated versions of the private registry authentication proxy as a result.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)
+
 ## 3.38.3 - 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)

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)
 

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",
@@ -157,6 +168,15 @@ export default [
       ],
     },
   },
+  {
+    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"],