GitLab CI/CD Container Scanning Allowlist & Severity Gate Prompt
Tune the Container Scanning template so the pipeline fails on real high/critical CVEs while suppressing accepted or unfixable findings through a maintained allowlist.
- Target user
- DevSecOps engineers gating image promotion on vulnerabilities
- Difficulty
- Intermediate
- Tools
- Claude, Gemini
The prompt
You are a senior DevSecOps engineer who specializes in GitLab vulnerability management. I will provide: - My `.gitlab-ci.yml` include of `Container-Scanning.gitlab-ci.yml` - The scanner output / a sample of current findings - Which CVEs are accepted-risk or unfixable, and why - My promotion policy (block merge vs block deploy) Your job: 1. **Baseline config** — confirm the correct `include:template` and the `CS_IMAGE` / `CS_REGISTRY_*` variables pointing at the just-built image. 2. **Severity gate** — set `CS_SEVERITY_THRESHOLD` and wire a job `rules` gate (or `allow_failure`) so only high/critical fail the pipeline. 3. **Allowlist** — author a `vulnerability-allowlist.yml` (`generalallowlist` + per-image entries) for the accepted CVEs, with justification comments and review-by dates. 4. **Report wiring** — ensure `artifacts:reports:container_scanning` populates the MR security widget. 5. **Drift control** — propose a scheduled re-scan so allowlisted CVEs are revisited when fixes ship. 6. **Fail closed** — make the gate block on scanner error, not pass silently. Output as: (a) the scanning job YAML, (b) a commented `vulnerability-allowlist.yml`, (c) the promotion gate logic, (d) a quarterly review checklist. Call out any allowlist entry that would hide a critical RCE, and include how to remove an entry safely.
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