CVE-2026-45737: CWE-200: Exposure of Sensitive Information to an Unauthorized Actor in argoproj argo-cd
Argo CD versions prior to 3.2.12, 3.3.10, and 3.4.2 contain a vulnerability in the ServerSideDiff feature that can expose Kubernetes Secret values. This occurs because the HideSecretData function does not fully sanitize certain live Secret objects, allowing sensitive data and annotations to appear in UI or CLI diffs. The issue is fixed in versions 3.2.12, 3.3.10, and 3.4.2.
AI Analysis
Technical Summary
CVE-2026-45737 affects Argo CD, a GitOps continuous delivery tool for Kubernetes. In versions before 3.2.12, 3.3.10, and 3.4.2, the ServerSideDiff functionality can leak sensitive Kubernetes Secret data embedded in the kubectl.kubernetes.io/last-applied-configuration annotation. This occurs because the HideSecretData function does not fully sanitize the predicted live Secret objects in ResourceDiff.TargetState and LiveState, resulting in exposure of sensitive data, stringData, and annotations in the UI or CLI diffs. The vulnerability is categorized under CWE-200 (Exposure of Sensitive Information) and CWE-212 (Exposure of Sensitive Information Through Data Remanence).
Potential Impact
The vulnerability allows unauthorized actors with access to Argo CD's ServerSideDiff feature to view sensitive Kubernetes Secret values that should be hidden. This exposure can lead to leakage of confidential information such as secret keys or credentials. The CVSS 3.1 score is 6.3 (medium severity), reflecting network attack vector, high impact on confidentiality, but requiring low privileges and high attack complexity.
Mitigation Recommendations
This issue is fixed in Argo CD versions 3.2.12, 3.3.10, and 3.4.2. Users should upgrade to one of these versions or later to remediate the vulnerability. No vendor advisory is provided to indicate alternative mitigations or temporary fixes. Patch status is confirmed by the version information in the description.
CVE-2026-45737: CWE-200: Exposure of Sensitive Information to an Unauthorized Actor in argoproj argo-cd
Description
Argo CD versions prior to 3.2.12, 3.3.10, and 3.4.2 contain a vulnerability in the ServerSideDiff feature that can expose Kubernetes Secret values. This occurs because the HideSecretData function does not fully sanitize certain live Secret objects, allowing sensitive data and annotations to appear in UI or CLI diffs. The issue is fixed in versions 3.2.12, 3.3.10, and 3.4.2.
CVSS v3.1
Score 6.3medium
Affected software
pkg:github/argoproj/argo-cdRun on your own infrastructure? Check whether these packages are installed with threat-finder — our free open-source scanner.
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
CVE-2026-45737 affects Argo CD, a GitOps continuous delivery tool for Kubernetes. In versions before 3.2.12, 3.3.10, and 3.4.2, the ServerSideDiff functionality can leak sensitive Kubernetes Secret data embedded in the kubectl.kubernetes.io/last-applied-configuration annotation. This occurs because the HideSecretData function does not fully sanitize the predicted live Secret objects in ResourceDiff.TargetState and LiveState, resulting in exposure of sensitive data, stringData, and annotations in the UI or CLI diffs. The vulnerability is categorized under CWE-200 (Exposure of Sensitive Information) and CWE-212 (Exposure of Sensitive Information Through Data Remanence).
Potential Impact
The vulnerability allows unauthorized actors with access to Argo CD's ServerSideDiff feature to view sensitive Kubernetes Secret values that should be hidden. This exposure can lead to leakage of confidential information such as secret keys or credentials. The CVSS 3.1 score is 6.3 (medium severity), reflecting network attack vector, high impact on confidentiality, but requiring low privileges and high attack complexity.
Mitigation Recommendations
This issue is fixed in Argo CD versions 3.2.12, 3.3.10, and 3.4.2. Users should upgrade to one of these versions or later to remediate the vulnerability. No vendor advisory is provided to indicate alternative mitigations or temporary fixes. Patch status is confirmed by the version information in the description.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- GitHub_M
- Date Reserved
- 2026-05-13T06:54:34.219Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Remediation Level
- null
Threat ID: 6a57eb0b68715ace4363c87a
Added to database: 07/15/2026, 20:18:19 UTC
Last enriched: 07/22/2026, 22:56:08 UTC
Last updated: 08/29/2026, 10:52:09 UTC
Views: 72
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