What’s Vulnerable › Vulnerabilities

CVE-2026-45737: Argo CD: Kubernetes Secret Extraction via ArgoCD ServerSideDiff via sensitive annotations

• Severity: medium (CVSS 6.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.5% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2026-07-15 · updated 2026-10-24
• Weakness: CWE-200

Description

Argo CD is a declarative, GitOps continuous delivery tool for Kubernetes. From 3.2.0 until 3.2.12, 3.3.10, and 3.4.2, Argo CD ServerSideDiff can expose Kubernetes Secret values embedded in the kubectl.kubernetes.io/last-applied-configuration annotation because HideSecretData(target, live, ...) does not fully sanitize ResourceDiff.TargetState and LiveState predicted live Secret objects, allowing sensitive data, stringData, and annotations to appear in UI or CLI diffs. This issue is fixed in versions 3.2.12, 3.3.10, and 3.4.2.

Affected products

• argoproj argo-cd: from 3.2.0 before 3.2.12; from 3.3.9 before 3.3.10; from 3.4.1 before 3.4.2 — fixed in 3.2.12, 3.3.10, 3.4.2

How to fix

Upgrade to a fixed version: argoproj argo-cd 3.2.12, 3.3.10, 3.4.2. Check the vendor advisory for mitigations.

References

• https://github.com/argoproj/argo-cd/commit/7879e6322465080a82d152bf00f2b92e0f36c658
• https://github.com/argoproj/argo-cd/commit/87e9148320749693624d08e3d6fa2cc217c672a0
• https://github.com/argoproj/argo-cd/commit/ac11bec9986807adc8886ef1181eced7347ef5c6
• https://github.com/argoproj/argo-cd/commit/bcb4298afc9fcff5f5d69f4e1db2d0a75983f42c
• https://github.com/argoproj/argo-cd/releases/tag/v3.2.12
• https://github.com/argoproj/argo-cd/releases/tag/v3.3.10
• https://github.com/argoproj/argo-cd/releases/tag/v3.4.2
• https://github.com/argoproj/argo-cd/security/advisories/GHSA-rg3g-4rw9-gqrp
• https://github.com/argoproj/argo-cd/security/advisories/GHSA-rg3g-4rw9-gqrp

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