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Informational 19 Bitcoin

Merge rust-bitcoin/rust-bitcoin#6773: build(deps): bump actions/cache from 5.0.5 to 6.1.0

Public commit record

What the developer wrote

Authored by Andrew Poelstra

100/100 · Strong
Merge rust-bitcoin/rust-bitcoin#6773: build(deps): bump actions/cache from 5.0.5 to 6.1.0

3b21f967867b2e78ab5fc7e5a6d7d981a9549e72 build(deps): bump actions/cache from 5.0.5 to 6.1.0 (dependabot[bot])

Pull request description:

Bumps [actions/cache](https://github.com/actions/cache) from 5.0.5 to 6.1.0.
<details>
<summary>Release notes</summary>
<p><em>Sourced from <a href="https://github.com/actions/cache/releases">actions/cache's releases</a>.</em></p>
<blockquote>
<h2>v6.1.0</h2>
<h2>What's Changed</h2>
<ul>
<li>Bump <code>@​actions/cache</code> to v6.1.0 - handle read-only cache access by <a href="https://github.com/jasongin"><code>@​jasongin</code></a> in <a href="https://redirect.github.com/actions/cache/pull/1768">actions/cache#1768</a></li>
</ul>
<p><strong>Full Changelog</strong>: <a href="https://github.com/actions/cache/compare/v6...v6.1.0">https://github.com/actions/cache/compare/v6...v6.1.0</a></p>
<h2>v6.0.0</h2>
<h2>What's Changed</h2>
<ul>
<li>Update packages, migrate to ESM by <a href="https://github.com/Samirat"><code>@​Samirat</code></a> in <a href="https://redirect.github.com/actions/cache/pull/1760">actions/cache#1760</a></li>
</ul>
<p><strong>Full Changelog</strong>: <a href="https://github.com/actions/cache/compare/v5...v6.0.0">https://github.com/actions/cache/compare/v5...v6.0.0</a></p>
<h2>v5.1.0</h2>
<h2>What's Changed</h2>
<ul>
<li>Bump <code>@​actions/cache</code> to v5.1.0 - handle read-only cache access by <a href="https://github.com/jasongin"><code>@​jasongin</code></a> in <a href="https://redirect.github.com/actions/cache/pull/1775">actions/cache#1775</a></li>
</ul>
<p><strong>Full Changelog</strong>: <a href="https://github.com/actions/cache/compare/v5...v5.1.0">https://github.com/actions/cache/compare/v5...v5.1.0</a></p>
</blockquote>
</details>
<details>
<summary>Changelog</summary>
<p><em>Sourced from <a href="https://github.com/actions/cache/blob/main/RELEASES.md">actions/cache's changelog</a>.</em></p>
<blockquote>
<h1>Releases</h1>
<h2>How to prepare a release</h2>
<blockquote>
<p>[!NOTE]
Relevant for maintainers with write access only.</p>
</blockquote>
<ol>
<li>Switch to a new branch from <code>main</code>.</li>
<li>Run <code>npm test</code> to ensure all tests are passing.</li>
<li>Update the version in <a href="https://github.com/actions/cache/blob/main/package.json"><code>https://github.com/actions/cache/blob/main/package.json</code></a>.</li>
<li>Run <code>npm run build</code> to update the compiled files.</li>
<li>Update this <a href="https://github.com/actions/cache/blob/main/RELEASES.md"><code>https://github.com/actions/cache/blob/main/RELEASES.md</code></a> with the new version and changes in the <code>## Changelog</code> section.</li>
<li>Run <code>licensed cache</code> to update the license report.</li>
<li>Run <code>licensed status</code> and resolve any warnings by updating the <a href="https://github.com/actions/cache/blob/main/.licensed.yml"><code>https://github.com/actions/cache/blob/main/.licensed.yml</code></a> file with the exceptions.</li>
<li>Commit your changes and push your branch upstream.</li>
<li>Open a pull request against <code>main</code> and get it reviewed and merged.</li>
<li>Draft a new release <a href="https://github.com/actions/cache/releases">https://github.com/actions/cache/releases</a> use the same version number used in <code>package.json</code>
<ol>
<li>Create a new tag with the version number.</li>
<li>Auto generate release notes and update them to match the changes you made in <code>RELEASES.md</code>.</li>
<li>Toggle the set as the latest release option.</li>
<li>Publish the release.</li>
</ol>
</li>
<li>Navigate to <a href="https://github.com/actions/cache/actions/workflows/release-new-action-version.yml">https://github.com/actions/cache/actions/workflows/release-new-action-version.yml</a>
<ol>
<li>There should be a workflow run queued with the same version number.</li>
<li>Approve the run to publish the new version and update the major tags for this action.</li>
</ol>
</li>
</ol>
<h2>Changelog</h2>
<h3>6.1.0</h3>
<ul>
<li>Bump <code>@actions/cache</code> to v6.1.0 to pick up <a href="https://redirect.github.com/actions/toolkit/pull/2435">actions/toolkit#2435 Handle cache write error due to read-only token</a></li>
<li>Switch redundant &quot;Cache save failed&quot; warning to debug log in save-only</li>
</ul>
<h3>6.0.0</h3>
<ul>
<li>Updated <code>@actions/cache</code> to ^6.0.1, <code>@actions/core</code> to ^3.0.1, <code>@actions/exec</code> to ^3.0.0, <code>@actions/io</code> to ^3.0.2</li>
<li>Migrated to ESM module system</li>
<li>Upgraded Jest to v30 and test infrastructure to be ESM compatible</li>
</ul>
<h3>5.0.4</h3>
<ul>
<li>Bump <code>minimatch</code> to v3.1.5 (fixes ReDoS via globstar patterns)</li>
<li>Bump <code>undici</code> to v6.24.1 (WebSocket decompression bomb protection, header validation fixes)</li>
<li>Bump <code>fast-xml-parser</code> to v5.5.6</li>
</ul>
<h3>5.0.3</h3>
<ul>
<li>Bump <code>@actions/cache</code> to v5.0.5 (Resolves: <a href="https://github.com/actions/cache/security/dependabot/33">https://github.com/actions/cache/security/dependabot/33</a>)</li>
<li>Bump <code>@actions/core</code> to v2.0.3</li>
</ul>
<h3>5.0.2</h3>
<!-- raw HTML omitted -->
</blockquote>
<p>... (truncated)</p>
</details>
<details>
<summary>Commits</summary>
<ul>
<li><a href="https://github.com/actions/cache/commit/55cc8345863c7cc4c66a329aec7e433d2d1c52a9"><code>55cc834</code></a> Merge pull request <a href="https://redirect.github.com/actions/cache/issues/1768">#1768</a> from jasongin/readonly-cache</li>
<li><a href="https://github.com/actions/cache/commit/d8cd72f230726cdf4457ebb61ec1b593a8d12337"><code>d8cd72f</code></a> Bump <code>@​actions/cache</code> to v6.1.0 - handle cache write error due to RO token</li>
<li><a href="https://github.com/actions/cache/commit/2c8a9bd7457de244a408f35966fab2fb45fda9c8"><code>2c8a9bd</code></a> Merge pull request <a href="https://redirect.github.com/actions/cache/issues/1760">#1760</a> from actions/samirat/esm_migration_and_package_update</li>
<li><a href="https://github.com/actions/cache/commit/e9b91fdc3fea7d79165fceb79042ef45c2d51023"><code>e9b91fd</code></a> Prettier fixes</li>
<li><a href="https://github.com/actions/cache/commit/e4884b8ff7f92ef6b52c79eda480bbc86e685adb"><code>e4884b8</code></a> Rebuild dist</li>
<li><a href="https://github.com/actions/cache/commit/10baf0191a3c426ea0fa4a3253a5c04233b6e18f"><code>10baf01</code></a> Fixed licenses</li>
<li><a href="https://github.com/actions/cache/commit/e39b386c9004d72a15d864ade8c0b3a702d47a37"><code>e39b386</code></a> Fix test mock return order</li>
<li><a href="https://github.com/actions/cache/commit/b6928203372a8571ff984c0c883ef3a1adfb0c06"><code>b692820</code></a> PR feedback</li>
<li><a href="https://github.com/actions/cache/commit/60749128a44d25d3c520a489e576380cf00ff3f1"><code>6074912</code></a> Rebuild dist bundles as ESM to match type:module</li>
<li><a href="https://github.com/actions/cache/commit/5a912e8b4af820fa082a0e75cfd2c782f8fbfe0e"><code>5a912e8</code></a> Fix lint and jest issues</li>
<li>Additional commits viewable in <a href="https://github.com/actions/cache/compare/27d5ce7f107fe9357f9df03efb73ab90386fccae...55cc8345863c7cc4c66a329aec7e433d2d1c52a9">compare view</a></li>
</ul>
</details>
<br />


[![Dependabot compatibility score](https://dependabot-badges.githubapp.com/badges/compatibility_score?dependency-name=actions/cache&package-manager=github_actions&previous-version=5.0.5&new-version=6.1.0)](https://docs.github.com/en/github/managing-security-vulnerabilities/about-dependabot-security-updates#about-compatibility-scores)

Dependabot will resolve any conflicts with this PR as long as you don't alter it yourself. You can also trigger a rebase manually by commenting `@dependabot rebase`.

[//]: # (dependabot-automerge-start)
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---

<details>
<summary>Dependabot commands and options</summary>
<br />

You can trigger Dependabot actions by commenting on this PR:
- `@dependabot rebase` will rebase this PR
- `@dependabot recreate` will recreate this PR, overwriting any edits that have been made to it
- `@dependabot show <dependency name> ignore conditions` will show all of the ignore conditions of the specified dependency
- `@dependabot ignore this major version` will close this PR and stop Dependabot creating any more for this major version (unless you reopen the PR or upgrade to it yourself)
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</details>


ACKs for top commit:
apoelstra:
ACK 3b21f967867b2e78ab5fc7e5a6d7d981a9549e72; successfully ran local tests
satsfy:
ACK 3b21f967867b2e78ab5fc7e5a6d7d981a9549e72


Tree-SHA512: 7d32885b0c0a7b99fe8693dec176fc5f70d6ba8e294e1ffbaad3239b0fe37b4ec02a7ad4dcfe21d7017d50b29305ad24607364c6b6c32a411f44ac0d457da4d2
✓ Specific, descriptive subject✓ Names a concrete action or component✓ Provides detailed explanatory context✓ Explains rationale or failure mode✓ Mentions testing or verification✓ Links an issue, advisory, or supporting reference✓ Names security-relevant behavior explicitly
The short version

What changed, and why it matters

This commit updates the GitHub Actions 'cache' tool used in two automated fuzzing workflows from version 5.0.5 to 6.1.0. The change is a routine dependency bump by Dependabot. It does not modify the Rust Bitcoin library code that end users rely on. The new version mainly handles a minor cache-write error more gracefully and updates internal packages. There is no direct evidence this fixes an active security problem in rust-bitcoin itself.

Recommended action

No immediate action required. Treat as routine CI maintenance. If the project pins GitHub Actions by commit hash, verify the new hash 55cc8345863c7cc4c66a329aec7e433d2d1c52a9 matches the official actions/cache v6.1.0 release (it does, based on the supplied release notes). Continue normal fuzzing workflow monitoring.

Security signals we found

01

Dependency bump of a GitHub Actions runner helper (actions/cache) in CI fuzzing workflows only

02

Upstream changelog mentions read-only cache token handling and ESM migration, not a vulnerability in rust-bitcoin

03

No changes to Rust source, build scripts, cryptography, or consensus code

04

Commit is a merge of an automated Dependabot pull request

Risk score

Why this scored 19/100

Our methodology →
Potential impact 2/30
Exploitability 1/25
Stealth signal 1/15
Affected reach 2/15
Confidence 9/10
Evidence quality 4/5
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