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sec(ci): pin third-party action refs to commit SHAs (backend#1490, D10) - #595
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Pin every third-party (non-tracebloc, non-actions) action ref to the full 40-char commit SHA it currently resolves to, with a trailing exact-version comment (D10, RFC-BACKEND-1405). Behaviour-preserving: no version changes, only removal of silent tag mutation. Part of tracebloc/backend#1490. Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
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Mechanical half of the D10 supply-chain sweep (RFC-BACKEND-1405): every third-party action ref in
.github/workflowsis pinned to the full 40-character commit SHA it already resolves to today, with a trailing exact-version comment. Behaviour-preserving — the same code runs; only silent tag mutation is removed. No upgrades.azure/setup-helm@v41a275c3b69536ee54be43f2070a358922e12c8d4# v4.3.1git/ref/tags, annotated tags dereferenced throughgit/tagsto the commit), cross-checked against the exact release tag named in the comment.actionlint: no new findings vs base.tracebloc/*refs (stay@mainper D10) andactions/*refs (split to backend#1491) deliberately untouched.Part of tracebloc/backend#1490.
🤖 Generated with Claude Code
Note
Low Risk
Workflow-only pinning with no Helm version or chart logic changes; reduces supply-chain risk without altering runtime behavior.
Overview
Pins
azure/setup-helmfrom the mutable@v4tag to commit1a275c3b69536ee54be43f2070a358922e12c8d4(# v4.3.1) at every Helm setup step in drift-checks, helm-ci, and release-helm-chart workflows.This is a behavior-preserving supply-chain change: Helm is still installed at
v3.15.4viawith.version; only the action ref is immutable so a retaggedv4cannot silently change what CI runs.actions/*and other third-party refs are intentionally left for separate work.Reviewed by Cursor Bugbot for commit ac49622. Bugbot is set up for automated code reviews on this repo. Configure here.