CVE-2026-42297: Argo has Missing Authorization in its Sync ConfigMap Provider

May 4, 2026 (updated May 13, 2026)

The Sync Service’s ConfigMap-backed provider (server/sync/sync_cm.go) performs zero authorization checks on all CRUD operations (create, read, update, delete). Any authenticated user — including those using fake Bearer tokens — can create, read, update, and delete Kubernetes ConfigMaps containing synchronization limits.

References

github.com/advisories/GHSA-xchc-cqwg-g76q
github.com/argoproj/argo-workflows/commit/09fff05e0830c14a5e36cc40597ad84881db1ab6
github.com/argoproj/argo-workflows/releases/tag/v4.0.5
github.com/argoproj/argo-workflows/security/advisories/GHSA-xchc-cqwg-g76q
nvd.nist.gov/vuln/detail/CVE-2026-42297

Code Behaviors & Features

Detect and mitigate CVE-2026-42297 with GitLab Dependency Scanning

Secure your software supply chain by verifying that all open source dependencies used in your projects contain no disclosed vulnerabilities. Dependency Scanning using SBOM also detects vulnerabilities from proprietary advisories that this site does not include. Learn more about Dependency Scanning using SBOM →