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

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