VULNERABILITY INTELLIGENCE

CVE-2026-42880

CVSS score9.6 CRITICAL
EPSS probability0.65%
CISA KEVNot currently listed
Published2026-05-07
Last modified2026-10-26
CVSS vectorCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:N

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.

Weakness classification

  • security-advisories@github.com: CWE-200
  • 0b0ca135-0b70-47e7-9f44-1890c2a1c46c: CWE-201

Primary references