GHSA-274v-mgcv-cm8j: 
vulnerability analysis and mitigation

A vulnerability (GHSA-274v-mgcv-cm8j) was discovered in Argo CD GitOps Engine that exposed secret values in error messages and the diff view when an invalid Kubernetes Secret resource was synced from a repository. The vulnerability affects versions <=0.7.3 of github.com/argoproj/gitops-engine and was disclosed on January 30, 2025. This security issue has been assigned CVE-2025-23216 and carries a CVSS score of 6.8 (Moderate severity) (GitHub Advisory).

The vulnerability is characterized by a failure to properly scrub secret values from patch errors and diff views when handling invalid Kubernetes Secret resources. The issue has a CVSS v3.1 base metric score of 6.8 with the following characteristics: Network attack vector, Low attack complexity, High privileges required, No user interaction needed, Changed scope, and High confidentiality impact (GitHub Advisory).

When exploited, the vulnerability allows any user with read access to Argo CD to view exposed secret data. This occurs when an invalid Secret is committed to a repository and a Sync operation is triggered. The exposure of secret values happens through error messages and the diff view, potentially compromising sensitive information (GitHub Advisory).

Patches for this vulnerability are available in Argo CD versions v2.13.4, v2.12.10, and v2.11.13. The fix involves updating the GitOps Engine to properly handle secret values in error messages and diff views. There are no workarounds available other than upgrading to a patched version (GitHub Advisory, Argo CD Advisory).