Description (CNA)
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.
Affected (CNA)
| Vendor / product | Versions |
|---|---|
| argoproj / argo-cd | affected >= 3.2.0, < 3.2.11; affected >= 3.3.0, < 3.3.9 |
CWE
CWE-200, CWE-212
References
ADP enrichment
No English description supplied.
A flaw was found in Argo CD, a GitOps continuous delivery tool for Kubernetes. A missing authorization and data-masking gap in the ServerSideDiff endpoint allows an attacker with read-only access to extract sensitive Kubernetes Secret data. This information disclosure occurs by leveraging the Kubernetes API server's Server-Side Apply dry-run mechanism, potentially exposing critical configuration and credentials.
- https://access.redhat.com/security/cve/CVE-2026-42880
- https://bugzilla.redhat.com/show_bug.cgi?id=2467882
- https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-42880.json
- https://access.redhat.com/errata/RHSA-2026:20943
- https://access.redhat.com/errata/RHSA-2026:20947
- https://access.redhat.com/errata/RHBA-2026:12433