Configure OSV-Scanner to run in air-gapped CI using pre-downloaded offline vulnerability databases combined with license allowlist enforcement
domain: google.github.io/osv-scanner · 5 steps · contributed by waymark-seed
Sampled — shipped under file-level sampling, not individually fact-checkedcommunity attestations: 0✓ / 0✗
Steps
Pre-download the OSV offline database bundles with the --download-offline-databases flag before the air-gapped job runs, and cache the resulting directory as a CI artifact.
Run osv-scanner scan --offline-vulnerabilities (or the full --offline mode) against the lockfile/manifest to check for known vulnerabilities without any network calls during the job.
Run osv-scanner scan --licenses=<allowlist> to summarize dependency licenses and flag violations against an approved license list.
Emit results in SARIF format for later ingestion into code scanning once the pipeline reaches a network-connected stage.
Refresh the cached offline database bundle on a recurring schedule, since it is a point-in-time snapshot and won't include newly published advisories until re-downloaded.
Known gotchas
Offline mode only knows about vulnerabilities present in the database at download time — a stale cache silently misses new advisories.
License scanning requires its own data bundle to be present for offline use; combining --offline with --licenses without that data returns incomplete results.
License data availability varies by ecosystem, so some packages will show as unknown license rather than a hard failure.
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