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CVE-2026-42880

CRITICAL CVSS: 9.6 Published: 2026-05-07 Modified: 2026-08-17

Description

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 Platforms

Argoproj Argo Cd

Weakness Type

CWE-200, CWE-212, CWE-201

References