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CVE-2026-42880

NVD

https://nvd.nist.gov/vuln/detail/CVE-2026-42880

Severity

9.6

Critical

CVSS V3

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Summary

ArgoCD ServerSideDiff is vulnerable to Kubernetes Secret Extraction

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.

References

Affected packages

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