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Secure CI workflows with zizmor ahead of enforced rollout#1872

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koverholt merged 4 commits into
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zizmor-workflow-hardening
Jun 26, 2026
Merged

Secure CI workflows with zizmor ahead of enforced rollout#1872
koverholt merged 4 commits into
mainfrom
zizmor-workflow-hardening

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@koverholt

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This PR hardens the GitHub Actions workflows using zizmor by remediating all medium+ findings from zizmor ahead of the org-wide rollout.

These changes lock our CI automation to exact, verified versions and give each workflow only the minimum permissions it needs, closing common supply-chain attack paths without changing what any workflow actually does.

Result

  • Gate scan (zizmor regular persona, medium+): 46 blocking findings to 0
    • 30 high (unpinned-uses), 16 medium (excessive-permissions, template-injection)
  • Also cleared 12 low artipacked and all template-injection code smells.

Changes (3 commits)

  • ci: pin actions to SHAs and harden workflows with zizmor auto-fixes
  • ci: set least-privilege GITHUB_TOKEN permissions on workflows
  • ci: move PR/issue context into env vars to prevent template injection

Verification

uvx zizmor@latest .github/workflows/No findings to report. Good job!

@koverholt koverholt requested a review from joefernandez June 25, 2026 18:38
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@joefernandez joefernandez left a comment

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Thanks for the update.

@koverholt koverholt merged commit e15aa4b into main Jun 26, 2026
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@koverholt koverholt deleted the zizmor-workflow-hardening branch June 26, 2026 17:31
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2 participants