CVE-2026-45737
Medium · 6.3Argo CD: Kubernetes Secret Extraction via ArgoCD ServerSideDiff via sensitive annotations
CVSS
6.3
EPSS
0.5%
Published
May 19, 2026
CISA due date
—
The record
The original fix for [GHSA-3v3m-wc6v-x4x3](https://github.com/argoproj/argo-cd/security/advisories/GHSA-3v3m-wc6v-x4x3) is incomplete. argocd app diff --server-side-diff can still expose Kubernetes Secret values embedded in the kubectl.kubernetes.io/last-applied-configuration annotation. The prior fix masks top-level Secret data in ServerSideDiff responses, but it does not fully sanitize Secret data stored inside the last-applied-configuration annotation. If a Secret was previously created or updated using client-side apply, that annotation may contain raw data, stringData, and sensitive annotations. These values can be shown in UI/CLI diffs.
Affected packages
| Ecosystem | Package | Introduced | Fixed |
|---|
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