chore: pin third-party GitHub Actions to commit SHAs#105
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Pin all third-party GitHub Actions to full-length commit SHAs to prevent supply chain attacks. Addresses findings from the third-party-action-not-pinned-to-commit-sha Semgrep rule.
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Pin the slsa-github-generator action to the same commit SHA (5a775b367a56d5bd118a224a811bba288150a563) used in release-please.yml to prevent supply chain attacks. Co-authored-by: Patrick Kaeding <patrick@kaeding.name>
keelerm84
approved these changes
Mar 23, 2026
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Summary
Pin all third-party GitHub Actions to full-length commit SHAs to prevent supply chain attacks.
Addresses findings from the
third-party-action-not-pinned-to-commit-shaSemgrep rule.Test plan
Note
Low Risk
Low risk: workflow changes only pin existing third-party actions to specific commit SHAs to reduce supply-chain exposure, without altering build/test/release logic.
Overview
Pins previously version-tagged third-party GitHub Actions in CI/release workflows and composite actions to full commit SHAs (e.g.,
haskell-actions/*,googleapis/release-please-action, andslsa-framework/slsa-github-generator).This hardens the pipeline against upstream action tag changes while keeping the existing CI, publishing, and provenance steps functionally the same.
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