ci: declare workflow-level contents: read on 4 workflows#900
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jeongyoonlee merged 1 commit intoMay 16, 2026
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Pins the default GITHUB_TOKEN to contents: read on the workflows in .github/workflows/ that don't call a GitHub API beyond the initial checkout. The other workflows in this directory are left implicit because they need write scopes that a maintainer is better placed to declare. Motivation: CVE-2025-30066 (March 2025 tj-actions/changed-files compromise) exfiltrated GITHUB_TOKEN from workflow logs. Per-workflow caps bound runtime authority irrespective of repo or org default, give drift protection if the default ever widens, and are credited per-file by the OpenSSF Scorecard Token-Permissions check. YAML validated locally with yaml.safe_load. Signed-off-by: Arpit Jain <arpitjain099@gmail.com>
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Pull request overview
Adds workflow-level permissions: contents: read to four GitHub Actions workflows to restrict the default GITHUB_TOKEN scope, mitigating supply-chain attack risks like CVE-2025-30066.
Changes:
- Adds
permissions: contents: readblock to 4 workflow files - No functional changes to job logic or steps
Reviewed changes
Copilot reviewed 4 out of 4 changed files in this pull request and generated no comments.
| File | Description |
|---|---|
| .github/workflows/test-pypi-install.yml | Adds workflow-level read-only token scope |
| .github/workflows/test-build-from-source.yml | Adds workflow-level read-only token scope |
| .github/workflows/python-test.yaml | Adds workflow-level read-only token scope |
| .github/workflows/black.yml | Adds workflow-level read-only token scope |
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Pins the default
GITHUB_TOKENtocontents: readon 4 workflows in.github/workflows/that don't call a GitHub API beyond the initial checkout.Why
CVE-2025-30066 (March 2025
tj-actions/changed-filessupply-chain compromise) exfiltratedGITHUB_TOKENfrom workflow logs. Pinning per workflow caps runtime authority irrespective of the repo or org default, gives drift protection if the default ever widens, and is credited per-file by the OpenSSF ScorecardToken-Permissionscheck.YAML validated locally with
yaml.safe_loadon each touched file.