Critical · published May 8, 2026
Argo CD is a declarative, GitOps continuous delivery tool for Kubernetes. From versions 3.2.0 to before 3.2.11 and 3.3.0 to before 3.3.9, there is a missing authorization and data-masking gap in Argo CD's ServerSideDiff endpoint that allows an attacker with read-only access to extract plaintext Kubernetes Secret data from etcd via the Kubernetes API server's Server-Side Apply dry-run mechanism. This issue has been patched in versions 3.2.11 and 3.3.9.
| Product | Versions | Fixed in |
|---|---|---|
| argoproj/argo_cd | ≥ 3.2.0, < 3.2.11 | 3.2.11 |
| argoproj/argo_cd | ≥ 3.3.0, < 3.3.9 | 3.3.9 |