feat: pin GitHub Actions to SHA hashes and add security linters#2016
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mpartipilo wants to merge 2 commits intomainfrom
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feat: pin GitHub Actions to SHA hashes and add security linters#2016mpartipilo wants to merge 2 commits intomainfrom
mpartipilo wants to merge 2 commits intomainfrom
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Prevent supply chain attacks by replacing mutable tag references with immutable commit SHAs across all workflow files. Add CI linter to enforce SHA pinning and a PR security workflow to detect hidden Unicode characters (trojan-source prevention). Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
Pin all external GitHub Actions references to immutable commit SHAs and add the pinned actions linter step to the lint-and-format job. Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
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Orca Security Scan Summary
| Status | Check | Issues by priority | |
|---|---|---|---|
 Passed |
Infrastructure as Code |  0  0  0  0 |
View in Orca |
| Passed |
SAST | 0 0 0 0 |
View in Orca |
| Passed |
Secrets | 0 0 0 0 |
View in Orca |
| Passed |
Vulnerabilities | 0 0 0 0 |
View in Orca |
Codecov Report✅ All modified and coverable lines are covered by tests. Additional details and impacted files@@ Coverage Diff @@
## main #2016 +/- ##
==========================================
- Coverage 87.95% 87.92% -0.03%
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Files 280 280
Lines 21664 21666 +2
==========================================
- Hits 19054 19050 -4
- Misses 2610 2616 +6 ☔ View full report in Codecov by Sentry. 🚀 New features to boost your workflow:
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Summary
tools/linter_actions_pinned.shas a CI step in the lint-and-format job to enforce SHA pinning going forwardtools/linter_hidden_unicode.shand apull_request_targetworkflow to detect hidden/invisible Unicode characters in PR diffs (trojan-source prevention)Motivation
Mutable tags can be moved to point at malicious commits — this happened in practice with
tj-actions/changed-files(CVE-2025-30066). SHA pinning makes this impossible. The hidden Unicode linter guards against trojan-source attacks where invisible characters manipulate code rendering.Based on patterns from weaviate/weaviate#10907, weaviate/weaviate#10909, and weaviate/csharp-client#313.
Test plan
bash tools/linter_actions_pinned.shpasses locally (all actions verified as SHA-pinned)linter_hidden_unicode.sh --stdincorrectly detects zero-width space (U+200B) in test inputlinter_hidden_unicode.sh --stdinpasses clean input without false positives🤖 Generated with Claude Code