docs: Update caching recommendations to mitigate cache poisoning risks (#1567)

* docs: Update caching recommendations to mitigate cache poisoning risks

* docs: Disable automatic npm caching to mitigate cache poisoning risks

.licenses/npm/@actions/cache.dep.yml

@@ -1,6 +1,6 @@
 ---
 name: "@actions/cache"
-version: 5.0.5
+version: 5.1.0
 type: npm
 summary: Actions cache lib
 homepage: https://github.com/actions/toolkit/tree/main/packages/cache

.licenses/npm/@fastify/busboy.dep.yml

@@ -1,30 +0,0 @@
----
-name: "@fastify/busboy"
-version: 2.1.1
-type: npm
-summary: A streaming parser for HTML form data for node.js
-homepage:
-license: mit
-licenses:
-- sources: LICENSE
-  text: |-
-    Copyright Brian White. All rights reserved.
-
-    Permission is hereby granted, free of charge, to any person obtaining a copy
-    of this software and associated documentation files (the "Software"), to
-    deal in the Software without restriction, including without limitation the
-    rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
-    sell copies of the Software, and to permit persons to whom the Software is
-    furnished to do so, subject to the following conditions:
-
-    The above copyright notice and this permission notice shall be included in
-    all copies or substantial portions of the Software.
-
-    THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
-    IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
-    FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
-    AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
-    LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
-    FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
-    IN THE SOFTWARE.
-notices: []

.licenses/npm/@nodable/entities.dep.yml

@@ -0,0 +1,11 @@
+---
+name: "@nodable/entities"
+version: 2.2.0
+type: npm
+summary: Entity parser for XML, HTML, External entites with security and NCR control
+homepage: 
+license: mit
+licenses:
+- sources: README.md
+  text: MIT
+notices: []

.licenses/npm/anynum.dep.yml

@@ -1,16 +1,17 @@
 ---
-name: undici
+name: anynum
-version: 6.24.1
+version: 1.0.1
 type: npm
-summary: An HTTP/1.1 client, written from scratch for Node.js
+summary: Normalize all Unicode decimal digits (Devanagari, Arabic, Thai, etc.) to
-homepage: https://undici.nodejs.org
+  ASCII numerals. Zero dependencies, performance-first.
+homepage: 
 license: mit
 licenses:
 - sources: LICENSE
   text: |
     MIT License
 
-    Copyright (c) Matteo Collina and Undici contributors
+    Copyright (c) 2026 Natural Intelligence
 
     Permission is hereby granted, free of charge, to any person obtaining a copy
     of this software and associated documentation files (the "Software"), to deal

.licenses/npm/fast-xml-builder.dep.yml

@@ -1,6 +1,6 @@
 ---
 name: fast-xml-builder
-version: 1.1.4
+version: 1.2.0
 type: npm
 summary: Build XML from JSON without C/C++ based libraries
 homepage: 

.licenses/npm/fast-xml-parser.dep.yml

@@ -1,6 +1,6 @@
 ---
 name: fast-xml-parser
-version: 5.5.11
+version: 5.9.2
 type: npm
 summary: Validate XML, Parse XML, Build XML without C/C++ based libraries
 homepage: 

.licenses/npm/is-unsafe.dep.yml

@@ -0,0 +1,35 @@
+---
+name: is-unsafe
+version: 1.0.1
+type: npm
+summary: Zero-dependency, DOM-free, pure predicate for detecting unsafe strings across
+  HTML, XML, SVG, SQL, SHELL, and REGEX contexts
+homepage: 
+license: mit
+licenses:
+- sources: LICENSE
+  text: |
+    MIT License
+
+    Copyright (c) 2026 Natural Intelligence
+
+    Permission is hereby granted, free of charge, to any person obtaining a copy
+    of this software and associated documentation files (the "Software"), to deal
+    in the Software without restriction, including without limitation the rights
+    to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+    copies of the Software, and to permit persons to whom the Software is
+    furnished to do so, subject to the following conditions:
+
+    The above copyright notice and this permission notice shall be included in all
+    copies or substantial portions of the Software.
+
+    THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+    IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+    FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+    AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+    LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+    OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+    SOFTWARE.
+- sources: README.md
+  text: MIT
+notices: []

.licenses/npm/path-expression-matcher.dep.yml

@@ -1,6 +1,6 @@
 ---
 name: path-expression-matcher
-version: 1.4.0
+version: 1.5.0
 type: npm
 summary: Efficient path tracking and pattern matching for XML/JSON parsers
 homepage: https://github.com/NaturalIntelligence/path-expression-matcher#readme

.licenses/npm/strnum.dep.yml

@@ -1,6 +1,6 @@
 ---
 name: strnum
-version: 2.2.3
+version: 2.4.1
 type: npm
 summary: Parse String to Number based on configuration
 homepage: 

.licenses/npm/undici.dep.yml

@@ -1,6 +1,6 @@
 ---
 name: undici
-version: 5.29.0
+version: 6.27.0
 type: npm
 summary: An HTTP/1.1 client, written from scratch for Node.js
 homepage: https://undici.nodejs.org

.licenses/npm/xml-naming.dep.yml

@@ -0,0 +1,12 @@
+---
+name: xml-naming
+version: 0.1.0
+type: npm
+summary: Validates XML name productions — Name, NCName, QName, NMToken, NMTokens —
+  for XML 1.0 and 1.1
+homepage: 
+license: mit
+licenses:
+- sources: README.md
+  text: MIT
+notices: []

README.md

@@ -119,6 +119,7 @@ steps:
 - uses: actions/setup-node@v6
   with:
     node-version: 24
+    package-manager-cache: false # Disable automatic npm caching if not required
 - run: npm ci
 - run: npm test
 ```
@@ -217,6 +218,7 @@ jobs:
         uses: actions/setup-node@v6
         with:
           node-version: ${{ matrix.node }}
+          package-manager-cache: false # Disable automatic npm caching if not required
       - run: npm ci
       - run: npm test
 ```
@@ -232,6 +234,7 @@ uses: actions/setup-node@v6
 with:
   token: ${{ secrets.GH_DOTCOM_TOKEN }}
   node-version: 24
+  package-manager-cache: false # Disable automatic npm caching if not required
 ```
 
 If the runner is not able to access github.com, any Nodejs versions requested during a workflow run must come from the runner's tool cache. See "[Setting up the tool cache on self-hosted runners without internet access](https://docs.github.com/en/enterprise-server@3.2/admin/github-actions/managing-access-to-actions-from-githubcom/setting-up-the-tool-cache-on-self-hosted-runners-without-internet-access)" for more information.
@@ -249,6 +252,7 @@ If the runner is not able to access github.com, any Nodejs versions requested du
  - [Publishing to npmjs and GPR with npm](docs/advanced-usage.md#publish-to-npmjs-and-gpr-with-npm)
  - [Publishing to npmjs and GPR with yarn](docs/advanced-usage.md#publish-to-npmjs-and-gpr-with-yarn)
  - [Using private packages](docs/advanced-usage.md#use-private-packages)
+ - [Publishing to npm with Trusted Publisher (OIDC)](docs/advanced-usage.md#publishing-to-npm-with-trusted-publisher-oidc)
  - [Using private mirror](docs/advanced-usage.md#use-private-mirror)
 
 ## Recommended permissions

__tests__/authutil.test.ts

@@ -118,6 +118,27 @@ describe('authutil tests', () => {
     expect(process.env.NODE_AUTH_TOKEN).toEqual('foobar');
   });
 
+  it('should not export NODE_AUTH_TOKEN if not set in environment', async () => {
+    const exportSpy = jest.spyOn(core, 'exportVariable');
+    delete process.env.NODE_AUTH_TOKEN;
+    await auth.configAuthentication('https://registry.npmjs.org/');
+    expect(fs.statSync(rcFile)).toBeDefined();
+    const rc = readRcFile(rcFile);
+    expect(rc['registry']).toBe('https://registry.npmjs.org/');
+    expect(exportSpy).not.toHaveBeenCalledWith(
+      'NODE_AUTH_TOKEN',
+      expect.anything()
+    );
+  });
+
+  it('should export NODE_AUTH_TOKEN if set to empty string', async () => {
+    const exportSpy = jest.spyOn(core, 'exportVariable');
+    process.env.NODE_AUTH_TOKEN = '';
+    await auth.configAuthentication('https://registry.npmjs.org/');
+    expect(fs.statSync(rcFile)).toBeDefined();
+    expect(exportSpy).toHaveBeenCalledWith('NODE_AUTH_TOKEN', '');
+  });
+
   it('configAuthentication should overwrite non-scoped with non-scoped', async () => {
     fs.writeFileSync(rcFile, 'registry=NNN');
     await auth.configAuthentication('https://registry.npmjs.org/');

__tests__/cache-save.test.ts

@@ -343,7 +343,9 @@ describe('run', () => {
       expect(getInputSpy).not.toHaveBeenCalled();
       expect(getStateSpy).toHaveBeenCalledTimes(4);
       expect(getCommandOutputSpy).toHaveBeenCalledTimes(0);
-      expect(debugSpy).toHaveBeenCalledTimes(0);
+      expect(debugSpy).toHaveBeenLastCalledWith(
+        `Cache was not saved for the key: ${yarnFileHash}`
+      );
       expect(infoSpy).not.toHaveBeenCalledWith(
         `Cache hit occurred on the primary key ${npmFileHash}, not saving cache.`
       );

docs/advanced-usage.md

@@ -69,6 +69,7 @@ steps:
   with:
     node-version: '24'
     check-latest: true
+    package-manager-cache: false # Disable automatic npm caching if not required
 - run: npm ci
 - run: npm test
 ```
@@ -86,6 +87,7 @@ steps:
 - uses: actions/setup-node@v6
   with:
     node-version-file: '.nvmrc'
+    package-manager-cache: false # Disable automatic npm caching if not required
 - run: npm ci
 - run: npm test
 ```
@@ -131,6 +133,7 @@ jobs:
         with:
           node-version: '24'
           architecture: 'x64' # optional, x64 or x86. If not specified, x64 will be used by default
+          package-manager-cache: false # Disable automatic npm caching if not required
       - run: npm ci
       - run: npm test
 ```
@@ -151,6 +154,7 @@ jobs:
       - uses: actions/setup-node@v6
         with:
           node-version: '24.0.0-v8-canary' # it will install the latest v8 canary release for node 24.0.0
+          package-manager-cache: false # Disable automatic npm caching if not required
       - run: npm ci
       - run: npm test
 ```
@@ -166,6 +170,7 @@ jobs:
       - uses: actions/setup-node@v6
         with:
           node-version: '24-v8-canary' # it will install the latest v8 canary release for node 24
+          package-manager-cache: false # Disable automatic npm caching if not required
       - run: npm ci
       - run: npm test
 ```
@@ -182,6 +187,7 @@ jobs:
       - uses: actions/setup-node@v6
         with:
           node-version: 'v24.0.0-v8-canary2025030537242e55ac'
+          package-manager-cache: false # Disable automatic npm caching if not required
       - run: npm ci
       - run: npm test
 ```
@@ -202,6 +208,7 @@ jobs:
       - uses: actions/setup-node@v6
         with:
           node-version: '24-nightly' # it will install the latest nightly release for node 24
+          package-manager-cache: false # Disable automatic npm caching if not required
       - run: npm ci
       - run: npm test
 ```
@@ -218,6 +225,7 @@ jobs:
       - uses: actions/setup-node@v6
         with:
           node-version: '24.0.0-nightly' # it will install the latest nightly release for node 24.0.0
+          package-manager-cache: false # Disable automatic npm caching if not required
       - run: npm ci
       - run: npm test
 ```
@@ -234,6 +242,7 @@ jobs:
       - uses: actions/setup-node@v6
         with:
           node-version: '24.0.0-nightly202505066102159fa1'
+          package-manager-cache: false # Disable automatic npm caching if not required
       - run: npm ci
       - run: npm test
 ```
@@ -252,11 +261,12 @@ jobs:
       - uses: actions/setup-node@v6
         with:
           node-version: '24.0.0-rc.4'
+          package-manager-cache: false # Disable automatic npm caching if not required
       - run: npm ci
       - run: npm test
 ```
 
-**Note:** Unlike nightly versions, which support version range specifiers, you must specify the exact version for a release candidate: `24.0.0-rc.4`.
+**Note**: Unlike nightly versions, which support version range specifiers, you must specify the exact version for a release candidate: `24.0.0-rc.4`.
 
 ## Caching packages data
 The action follows [actions/cache](https://github.com/actions/cache/blob/main/examples.md#node---npm) guidelines, and caches global cache on the machine instead of `node_modules`, so cache can be reused between different Node.js versions.
@@ -329,36 +339,52 @@ steps:
 - run: npm test
 ```
 
-**Restore-Only Cache**
+**Restore-only cache**
+
+You can restore caches without saving new entries, which helps reduce cache writes and storage usage in read-only cache workflows.
 
 ```yaml
-## In some workflows, you may want to restore a cache without saving it. This can help reduce cache writes and storage usage in workflows that only need to read from cache
-jobs:
-  build:
-    runs-on: ubuntu-latest
 steps:
 - uses: actions/checkout@v6
-      # Restore Node.js modules cache (restore-only)
+# - uses: pnpm/action-setup@v6 
-      - name: Restore Node modules cache
+#   with:
-        uses: actions/cache@v5
+#     version: 10
-        id: cache-node-modules
+
-        with:
-          path: ~/.npm
-          key: ${{ runner.os }}-node-${{ hashFiles('**/package-lock.json') }}
-          restore-keys: |
-            ${{ runner.os }}-node-
-      # Setup Node.js
 - name: Setup Node.js
   uses: actions/setup-node@v6
   with:
     node-version: '24'
-      # Install dependencies
+    package-manager-cache: false # Disable automatic npm caching if not required
-      - run: npm install
+
+- name: Normalize runner architecture
+  shell: bash
+  run: echo "ARCH=$(echo '${{ runner.arch }}' | tr '[:upper:]' '[:lower:]')" >> $GITHUB_ENV
+    
+- name: Output of cache path
+  id: cachepath
+  shell: bash
+  run: echo "path=$(npm config get cache)" >> $GITHUB_OUTPUT
+  # run: echo "path=$(pnpm store path --silent)" >> $GITHUB_OUTPUT
+  # For yarn workflow, output of yarn cache dir (v1) or yarn config get cacheFolder (v2+)
+  # run: echo "path=$(yarn cache dir)" >> $GITHUB_OUTPUT 
+    
+- name: Restore Node cache
+  uses: actions/cache/restore@v5
+  with:
+    path: ${{ steps.cachepath.outputs.path }}
+    key: node-cache-${{ runner.os }}-${{ env.ARCH }}-npm-${{ hashFiles('**/package-lock.json') }}
+    # key: node-cache-${{ runner.os }}-${{ env.ARCH }}-yarn-${{ hashFiles('**/yarn.lock') }}
+    # key: node-cache-${{ runner.os }}-${{ env.ARCH }}-pnpm-${{ hashFiles('**/pnpm-lock.yaml') }}
+    
+- run: npm ci
+# - run: yarn install --frozen-lockfile # optional, --immutable
+# - run: pnpm install
 ```
+> **Note**: Uncomment the commands relevant to your project's package manager.
 
-> For more details related to cache scenarios, please refer [Node – npm](https://github.com/actions/cache/blob/main/examples.md#node---npm).
+> For more details related to cache scenarios, please refer [actions/cache/restore](https://github.com/actions/cache/tree/main/restore#only-restore-cache).
 
-## Multiple Operating Systems and Architectures
+## Multiple operating systems and architectures
 
 ```yaml
 jobs:
@@ -389,6 +415,7 @@ jobs:
         with:
           node-version: ${{ matrix.node_version }}
           architecture: ${{ matrix.architecture }}
+          package-manager-cache: false # Disable automatic npm caching if not required
       - run: npm ci
       - run: npm test
 ```
@@ -401,6 +428,7 @@ steps:
   with:
     node-version: '24.x'
     registry-url: 'https://registry.npmjs.org'
+    package-manager-cache: false # Disable automatic npm dependency caching to reduce cache poisoning risk
 - run: npm ci
 - run: npm publish
   env:
@@ -408,6 +436,7 @@ steps:
 - uses: actions/setup-node@v6
   with:
     registry-url: 'https://npm.pkg.github.com'
+    package-manager-cache: false # Disable automatic npm dependency caching to reduce cache poisoning risk
 - run: npm publish
   env:
     NODE_AUTH_TOKEN: ${{ secrets.GITHUB_TOKEN }}
@@ -421,6 +450,7 @@ steps:
   with:
     node-version: '24.x'
     registry-url: <registry url>
+    package-manager-cache: false # Disable automatic npm dependency caching to reduce cache poisoning risk
 - run: yarn install --frozen-lockfile
 - run: yarn publish
   env:
@@ -428,6 +458,7 @@ steps:
 - uses: actions/setup-node@v6
   with:
     registry-url: 'https://npm.pkg.github.com'
+    package-manager-cache: false # Disable automatic npm dependency caching to reduce cache poisoning risk
 - run: yarn publish
   env:
     NODE_AUTH_TOKEN: ${{ secrets.GITHUB_TOKEN }}
@@ -441,6 +472,7 @@ steps:
   with:
     node-version: '24.x'
     registry-url: 'https://registry.npmjs.org'
+    package-manager-cache: false # Disable automatic npm dependency caching to reduce cache poisoning risk
 # Skip post-install scripts here, as a malicious
 # script could steal NODE_AUTH_TOKEN.
 - run: npm ci --ignore-scripts
@@ -460,6 +492,7 @@ steps:
 - uses: actions/setup-node@v6
   with:
     node-version: '24.x'
+    package-manager-cache: false # Disable automatic npm dependency caching to reduce cache poisoning risk
 - name: Setup .yarnrc.yml
   run: |
     yarn config set npmScopes.my-org.npmRegistryServer "https://npm.pkg.github.com"
@@ -475,6 +508,48 @@ To access private GitHub Packages within the same organization, go to "Manage Ac
 
 Please refer to the [Ensuring workflow access to your package - Configuring a package's access control and visibility](https://docs.github.com/en/packages/learn-github-packages/configuring-a-packages-access-control-and-visibility#ensuring-workflow-access-to-your-package) for more details.
 
+## Publishing to npm with Trusted Publisher (OIDC)
+
+npm supports Trusted Publishers, enabling packages to be published from GitHub Actions using OpenID Connect (OIDC) instead of long-lived npm tokens. This improves security by replacing static credentials with short-lived tokens, reducing the risk of credential leakage and simplifying authentication in CI/CD workflows.
+
+### Requirements
+
+Trusted publishing requires a compatible npm version:
+
+* **npm ≥ 11.5.1 (required)**
+* **Node.js 24 or newer (recommended)** — includes a compatible npm version by default
+
+> If npm is below 11.5.1, publishing will fail even if OIDC permissions are correctly configured.
+
+You must also configure a **Trusted Publisher** in npm for your package/scope that matches your GitHub repository and workflow (and optional environment, if used).
+
+> **Note**: In publishing workflows, set `package-manager-cache: false` because setup-node enables npm caching automatically when `package.json` specifies npm via `packageManager` or `devEngines.packageManager` (see [Running without a lockfile](#running-without-a-lockfile)), and a poisoned cache may expose credentials (including OIDC tokens) to attacker-controlled code.
+
+### Example workflow
+
+```yaml
+    permissions:
+      contents: read
+      id-token: write  # Required for OIDC
+
+    steps:
+      - uses: actions/checkout@v6
+
+      - uses: actions/setup-node@v6
+        with:
+          node-version: '24'
+          registry-url: 'https://registry.npmjs.org'
+          package-manager-cache: false # Disable automatic npm dependency caching to reduce cache poisoning risk
+
+      - run: npm ci
+      - run: npm run build --if-present
+      - run: npm publish
+```
+
+> **Note**: If the Trusted Publisher configuration (GitHub owner/repo/workflow file, and optional environment) does not match the workflow run identity exactly, publishing may fail with **E404 Not Found** even if the package exists on npm.
+
+For more details, see the [npm Trusted Publishers documentation](https://docs.npmjs.com/trusted-publishers) and the [GitHub Actions OpenID Connect (OIDC) overview](https://docs.github.com/en/actions/concepts/security/openid-connect).
+
 ## Use private mirror
 
 It is possible to use a private mirror hosting Node.js binaries. This mirror must be a full mirror of the official Node.js distribution.
@@ -488,4 +563,5 @@ The token will be passed in the `Authorization` header.
     node-version: '24.x'
     mirror: 'https://nodejs.org/dist'
     mirror-token: 'your-mirror-token'
+    cache-package-manager: false # Disable automatic npm caching if not required
 ```

package-lock.json

@@ -1,15 +1,15 @@
 {
   "name": "setup-node",
-  "version": "6.4.0",
+  "version": "6.5.0",
   "lockfileVersion": 3,
   "requires": true,
   "packages": {
     "": {
       "name": "setup-node",
-      "version": "6.4.0",
+      "version": "6.5.0",
       "license": "MIT",
       "dependencies": {
-        "@actions/cache": "^5.0.5",
+        "@actions/cache": "^5.1.0",
         "@actions/core": "^2.0.3",
         "@actions/exec": "^2.0.0",
         "@actions/github": "^6.0.1",
@@ -42,9 +42,9 @@
       }
     },
     "node_modules/@actions/cache": {
-      "version": "5.0.5",
+      "version": "5.1.0",
-      "resolved": "https://registry.npmjs.org/@actions/cache/-/cache-5.0.5.tgz",
+      "resolved": "https://registry.npmjs.org/@actions/cache/-/cache-5.1.0.tgz",
-      "integrity": "sha512-jiQSg0gfd+C2KPgcmdCOq7dCuCIQQWQ4b1YfGIRaaA9w7PJbRwTOcCz4LiFEUnqZGf0ha/8OKL3BeNwetHzYsQ==",
+      "integrity": "sha512-kTIj4YPrjjRPKSGlj7f8eq+Pijoy/SKBEbJcAwNsQTFGEF29NGqj1mqD02/PmhV6r4bRAixycexAWpmUJ2aCwg==",
       "license": "MIT",
       "dependencies": {
         "@actions/core": "^2.0.0",
@@ -112,18 +112,6 @@
         "undici": "^5.25.4"
       }
     },
-    "node_modules/@actions/github/node_modules/undici": {
-      "version": "5.29.0",
-      "resolved": "https://registry.npmjs.org/undici/-/undici-5.29.0.tgz",
-      "integrity": "sha512-raqeBD6NQK4SkWhQzeYKd1KmIG6dllBOTt55Rmkt4HtI9mwdWtJljnrXjAFUBLTSN67HWrOIZ3EPF4kjUw80Bg==",
-      "license": "MIT",
-      "dependencies": {
-        "@fastify/busboy": "^2.0.0"
-      },
-      "engines": {
-        "node": ">=14.0"
-      }
-    },
     "node_modules/@actions/glob": {
       "version": "0.5.1",
       "resolved": "https://registry.npmjs.org/@actions/glob/-/glob-0.5.1.tgz",
@@ -1047,15 +1035,6 @@
         "node": "^12.22.0 || ^14.17.0 || >=16.0.0"
       }
     },
-    "node_modules/@fastify/busboy": {
-      "version": "2.1.1",
-      "resolved": "https://registry.npmjs.org/@fastify/busboy/-/busboy-2.1.1.tgz",
-      "integrity": "sha512-vBZP4NlzfOlerQTnba4aqZoMhE/a9HY7HRqoOPaETQcSQuWEIyZMHGfVu6w9wGtGK5fED5qRs2DteVCjOH60sA==",
-      "license": "MIT",
-      "engines": {
-        "node": ">=14"
-      }
-    },
     "node_modules/@humanwhocodes/config-array": {
       "version": "0.13.0",
       "resolved": "https://registry.npmjs.org/@humanwhocodes/config-array/-/config-array-0.13.0.tgz",
@@ -1553,6 +1532,18 @@
         "@jridgewell/sourcemap-codec": "^1.4.14"
       }
     },
+    "node_modules/@nodable/entities": {
+      "version": "2.2.0",
+      "resolved": "https://registry.npmjs.org/@nodable/entities/-/entities-2.2.0.tgz",
+      "integrity": "sha512-9uGyhaQavEUMC8AIddIjau4NsnsXhou+j5sBAGojCM1oxmQpVKTWR/9JxABD6UAv12vpIms55fPZKFQEhG6uBg==",
+      "funding": [
+        {
+          "type": "github",
+          "url": "https://github.com/sponsors/nodable"
+        }
+      ],
+      "license": "MIT"
+    },
     "node_modules/@nodelib/fs.scandir": {
       "version": "2.1.5",
       "resolved": "https://registry.npmjs.org/@nodelib/fs.scandir/-/fs.scandir-2.1.5.tgz",
@@ -2277,6 +2268,18 @@
         "node": ">= 8"
       }
     },
+    "node_modules/anynum": {
+      "version": "1.0.1",
+      "resolved": "https://registry.npmjs.org/anynum/-/anynum-1.0.1.tgz",
+      "integrity": "sha512-N6//FLET/tXYNM/F6ABca1oH6fWB+KlTt909Le28WMDBk8oaT4vY17DCrwg2MvmuqUKt3Ni4N5dGJ/EoBgcO6A==",
+      "funding": [
+        {
+          "type": "github",
+          "url": "https://github.com/sponsors/NaturalIntelligence"
+        }
+      ],
+      "license": "MIT"
+    },
     "node_modules/argparse": {
       "version": "2.0.1",
       "resolved": "https://registry.npmjs.org/argparse/-/argparse-2.0.1.tgz",
@@ -3320,9 +3323,9 @@
       "license": "MIT"
     },
     "node_modules/fast-xml-builder": {
-      "version": "1.1.4",
+      "version": "1.2.0",
-      "resolved": "https://registry.npmjs.org/fast-xml-builder/-/fast-xml-builder-1.1.4.tgz",
+      "resolved": "https://registry.npmjs.org/fast-xml-builder/-/fast-xml-builder-1.2.0.tgz",
-      "integrity": "sha512-f2jhpN4Eccy0/Uz9csxh3Nu6q4ErKxf0XIsasomfOihuSUa3/xw6w8dnOtCDgEItQFJG8KyXPzQXzcODDrrbOg==",
+      "integrity": "sha512-00aAWieqff+ZJhsXA4g1g7M8k+7AYoMUUHF+/zFb5U6Uv/P0Vl4QZo84/IcufzYalLuEj9928bXN9PbbFzMF0Q==",
       "funding": [
         {
           "type": "github",
@@ -3331,13 +3334,14 @@
       ],
       "license": "MIT",
       "dependencies": {
-        "path-expression-matcher": "^1.1.3"
+        "path-expression-matcher": "^1.5.0",
+        "xml-naming": "^0.1.0"
       }
     },
     "node_modules/fast-xml-parser": {
-      "version": "5.5.11",
+      "version": "5.9.2",
-      "resolved": "https://registry.npmjs.org/fast-xml-parser/-/fast-xml-parser-5.5.11.tgz",
+      "resolved": "https://registry.npmjs.org/fast-xml-parser/-/fast-xml-parser-5.9.2.tgz",
-      "integrity": "sha512-QL0eb0YbSTVWF6tTf1+LEMSgtCEjBYPpnAjoLC8SscESlAjXEIRJ7cHtLG0pLeDFaZLa4VKZLArtA/60ZS7vyA==",
+      "integrity": "sha512-DYPkXnVSJHAGAkSBeVYhEo/seIpz2SLr9OQcX7m6lXaX3gvoB+DCKzFdZIEhZGI3I1DUhObBAUOT/v2xfoXz/w==",
       "funding": [
         {
           "type": "github",
@@ -3346,9 +3350,12 @@
       ],
       "license": "MIT",
       "dependencies": {
-        "fast-xml-builder": "^1.1.4",
+        "@nodable/entities": "^2.2.0",
-        "path-expression-matcher": "^1.4.0",
+        "fast-xml-builder": "^1.2.0",
-        "strnum": "^2.2.3"
+        "is-unsafe": "^1.0.1",
+        "path-expression-matcher": "^1.5.0",
+        "strnum": "^2.4.0",
+        "xml-naming": "^0.1.0"
       },
       "bin": {
         "fxparser": "src/cli/cli.js"
@@ -3863,6 +3870,18 @@
         "url": "https://github.com/sponsors/sindresorhus"
       }
     },
+    "node_modules/is-unsafe": {
+      "version": "1.0.1",
+      "resolved": "https://registry.npmjs.org/is-unsafe/-/is-unsafe-1.0.1.tgz",
+      "integrity": "sha512-CLK2+VdgERgD96EYm5lUQssZYlRg2tkZnbsxZoacmSiRxiFJ4Nk4SzjCl+Ur+v3kXIY9dTIdb3IH22y1mZ56LA==",
+      "funding": [
+        {
+          "type": "github",
+          "url": "https://github.com/sponsors/NaturalIntelligence"
+        }
+      ],
+      "license": "MIT"
+    },
     "node_modules/isexe": {
       "version": "2.0.0",
       "resolved": "https://registry.npmjs.org/isexe/-/isexe-2.0.0.tgz",
@@ -4977,9 +4996,9 @@
       }
     },
     "node_modules/path-expression-matcher": {
-      "version": "1.4.0",
+      "version": "1.5.0",
-      "resolved": "https://registry.npmjs.org/path-expression-matcher/-/path-expression-matcher-1.4.0.tgz",
+      "resolved": "https://registry.npmjs.org/path-expression-matcher/-/path-expression-matcher-1.5.0.tgz",
-      "integrity": "sha512-s4DQMxIdhj3jLFWd9LxHOplj4p9yQ4ffMGowFf3cpEgrrJjEhN0V5nxw4Ye1EViAGDoL4/1AeO6qHpqYPOzE4Q==",
+      "integrity": "sha512-cbrerZV+6rvdQrrD+iGMcZFEiiSrbv9Tfdkvnusy6y0x0GKBXREFg/Y65GhIfm0tnLntThhzCnfKwp1WRjeCyQ==",
       "funding": [
         {
           "type": "github",
@@ -5575,16 +5594,19 @@
       }
     },
     "node_modules/strnum": {
-      "version": "2.2.3",
+      "version": "2.4.1",
-      "resolved": "https://registry.npmjs.org/strnum/-/strnum-2.2.3.tgz",
+      "resolved": "https://registry.npmjs.org/strnum/-/strnum-2.4.1.tgz",
-      "integrity": "sha512-oKx6RUCuHfT3oyVjtnrmn19H1SiCqgJSg+54XqURKp5aCMbrXrhLjRN9TjuwMjiYstZ0MzDrHqkGZ5dFTKd+zg==",
+      "integrity": "sha512-M9eUSMT2dCB2cTNPG7UYj6KuK7RJR2SN2+yCV/fTW3xzTCS6EaGZ5pSMgDIjB7r8zSfTGk+dvvn9rTjpVS9Mwg==",
       "funding": [
         {
           "type": "github",
           "url": "https://github.com/sponsors/NaturalIntelligence"
         }
       ],
-      "license": "MIT"
+      "license": "MIT",
+      "dependencies": {
+        "anynum": "^1.0.1"
+      }
     },
     "node_modules/supports-color": {
       "version": "7.2.0",
@@ -5823,9 +5845,9 @@
       }
     },
     "node_modules/undici": {
-      "version": "6.24.1",
+      "version": "6.27.0",
-      "resolved": "https://registry.npmjs.org/undici/-/undici-6.24.1.tgz",
+      "resolved": "https://registry.npmjs.org/undici/-/undici-6.27.0.tgz",
-      "integrity": "sha512-sC+b0tB1whOCzbtlx20fx3WgCXwkW627p4EA9uM+/tNNPkSS+eSEld6pAs9nDv7WbY1UUljBMYPtu9BCOrCWKA==",
+      "integrity": "sha512-YmfV3YnEDzXRC5lZ2jWtWWHKGUm1zIt8AhesR1tens+HTNv+YZlN/dp6G727LOvMJ8xjP9Be7Y2Sdr96LDm+pg==",
       "license": "MIT",
       "engines": {
         "node": ">=18.17"
@@ -5981,6 +6003,21 @@
         "node": "^12.13.0 || ^14.15.0 || >=16.0.0"
       }
     },
+    "node_modules/xml-naming": {
+      "version": "0.1.0",
+      "resolved": "https://registry.npmjs.org/xml-naming/-/xml-naming-0.1.0.tgz",
+      "integrity": "sha512-k8KO9hrMyNk6tUWqUfkTEZbezRRpONVOzUTnc97VnCvyj6Tf9lyUR9EDAIeiVLv56jsMcoXEwjW8Kv5yPY52lw==",
+      "funding": [
+        {
+          "type": "github",
+          "url": "https://github.com/sponsors/NaturalIntelligence"
+        }
+      ],
+      "license": "MIT",
+      "engines": {
+        "node": ">=16.0.0"
+      }
+    },
     "node_modules/y18n": {
       "version": "5.0.8",
       "resolved": "https://registry.npmjs.org/y18n/-/y18n-5.0.8.tgz",

package.json

@@ -1,6 +1,6 @@
 {
   "name": "setup-node",
-  "version": "6.4.0",
+  "version": "6.5.0",
   "private": true,
   "description": "setup node action",
   "main": "lib/setup-node.js",
@@ -28,7 +28,7 @@
   "author": "GitHub",
   "license": "MIT",
   "dependencies": {
-    "@actions/cache": "^5.0.5",
+    "@actions/cache": "^5.1.0",
     "@actions/core": "^2.0.3",
     "@actions/exec": "^2.0.0",
     "@actions/github": "^6.0.1",
@@ -55,5 +55,9 @@
     "prettier": "^3.6.2",
     "ts-jest": "^29.4.1",
     "typescript": "^5.4.2"
+  },
+  "overrides": {
+    "undici": "^6.24.1",
+    "fast-xml-parser": "^5.9.2"
   }
 }

src/authutil.ts

@@ -46,9 +46,8 @@ function writeRegistryToFile(registryUrl: string, fileLocation: string) {
   newContents += `${authString}${os.EOL}${registryString}`;
   fs.writeFileSync(fileLocation, newContents);
   core.exportVariable('NPM_CONFIG_USERCONFIG', fileLocation);
-  // Export empty node_auth_token if didn't exist so npm doesn't complain about not being able to find it
+  // Only export NODE_AUTH_TOKEN if explicitly provided by user
-  core.exportVariable(
+  if (Object.prototype.hasOwnProperty.call(process.env, 'NODE_AUTH_TOKEN')) {
-    'NODE_AUTH_TOKEN',
+    core.exportVariable('NODE_AUTH_TOKEN', process.env.NODE_AUTH_TOKEN);
-    process.env.NODE_AUTH_TOKEN || 'XXXXX-XXXXX-XXXXX-XXXXX'
+  }
-  );
 }

src/cache-save.ts

@@ -62,7 +62,11 @@ const cachePackages = async (packageManager: string) => {
   }
 
   const cacheId = await cache.saveCache(cachePaths, primaryKey);
-  if (cacheId == -1) {
+  if (cacheId === -1) {
+    // saveCache returns -1 without throwing when the cache was not saved, e.g.
+    // a reserve collision or a read-only token (fork PR). @actions/cache has
+    // already logged the reason at the appropriate severity, so just trace it.
+    core.debug(`Cache was not saved for the key: ${primaryKey}`);
     return;
   }
 

src/distributions/official_builds/official_builds.ts

@@ -84,7 +84,9 @@ export default class OfficialBuilds extends BaseDistribution {
         downloadPath = await tc.downloadTool(
           versionInfo.downloadUrl,
           undefined,
-          this.nodeInfo.mirror ? this.nodeInfo.mirrorToken : this.nodeInfo.auth
+          this.nodeInfo.mirror && this.nodeInfo.mirrorToken
+            ? this.nodeInfo.mirrorToken
+            : this.nodeInfo.auth
         );
 
         if (downloadPath) {
@@ -188,7 +190,9 @@ export default class OfficialBuilds extends BaseDistribution {
     return tc.getManifestFromRepo(
       'actions',
       'node-versions',
-      this.nodeInfo.mirror ? this.nodeInfo.mirrorToken : this.nodeInfo.auth,
+      this.nodeInfo.mirror && this.nodeInfo.mirrorToken
+        ? this.nodeInfo.mirrorToken
+        : this.nodeInfo.auth,
       'main'
     );
   }