[Security hardening] Pin GitHub Actions by SHA#2441
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mnriem merged 1 commit intogithub:mainfrom May 4, 2026
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Pull request overview
This PR hardens the repository’s GitHub Actions workflows by replacing mutable action tags (e.g., @v4) with immutable commit SHAs, reducing supply-chain risk while preserving human-readable version context via trailing comments.
Changes:
- Pinned
actions/checkout,actions/setup-python,actions/setup-dotnet, Pages actions, CodeQL actions, andactions/staleto specific commit SHAs. - Preserved the upstream tag/major version as a trailing
# vXcomment for maintainability. - Minor whitespace cleanup in workflow YAML.
Show a summary per file
| File | Description |
|---|---|
| .github/workflows/test.yml | Pins checkout and setup-python action refs to SHAs for test/lint jobs. |
| .github/workflows/stale.yml | Pins actions/stale to a SHA. |
| .github/workflows/release.yml | Pins checkout to a SHA for the release workflow. |
| .github/workflows/release-trigger.yml | Pins checkout to a SHA for the release-trigger workflow. |
| .github/workflows/lint.yml | Pins checkout to a SHA for markdown lint workflow. |
| .github/workflows/docs.yml | Pins checkout + Pages-related actions to SHAs for docs deploy. |
| .github/workflows/codeql.yml | Pins checkout and CodeQL init/analyze actions to SHAs. |
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mnriem
approved these changes
May 4, 2026
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Summary
Security context
This reduces supply-chain risk from mutable action tags.
Closes #2439
Validation