Highlights
Supply Chain / CI/CD: 3 prior fixes. Scrutinize any change in this area.
.github/workflows/check.yaml: most-fixed (3 issues). Treat as high-risk during review.
3 high-severity fixes in this history; regressions here are high-impact.
Recurring patterns
The bug types that recur here, drawn from past fixes, not open vulnerabilities.
Supply Chain / CI/CD: Cache poisoning via setup-uv's automatic caching on sensitive events can inject malicious toolchain artifacts into CI, leading to arbitrary code execution in privileged workflows.
Supply Chain / CI/CD: actions/checkout on pull_request_target/workflow_run can check out untrusted fork PRs, allowing attacker-controlled code to run with repository secrets.
Supply Chain / CI/CD: Unpinned actions and exposed credentials in workflows create a broad attack surface where a compromised action or leaked token can lead to full repository compromise.