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Vulnerabilities CVE-2026-42880

CVE-2026-42880

Critical
Open
TLP:CLEAR

ArgoCD ServerSideDiff is vulnerable to Kubernetes Secret Extraction

NVD CVE.org
Ransomware

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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.

Details

CVSS Score
9.6
EPSS Score
0.51%

40.6th percentile

CVSS Vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:N
Confidence
90%
Published
May 7, 2026
Last Modified
Aug 11, 2026
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