CVE-2025-59538

Argo CD is a declarative, GitOps continuous delivery tool for Kubernetes. For versions 2.9.0-rc1 through 2.14.19, 3.0.0-rc1 through 3.2.0-rc1, 3.1.6 and 3.0.17, when the webhook.azuredevops.username and webhook.azuredevops.password are not set in the default configuration, the /api/webhook endpoint crashes the entire argocd-server process when it receives an Azure DevOps Push event whose JSON array resource.refUpdates is empty. The slice index [0] is accessed without a length check, causing an index-out-of-range panic. A single unauthenticated HTTP POST is enough to kill the process. This issue is resolved in versions 2.14.20, 3.2.0-rc2, 3.1.8 and 3.0.19.

The following products are affected by CVE-2025-59538 vulnerability.

Here, you will find a curated list of external links that provide in-depth information to CVE-2025-59538.

URL	Resource
https://github.com/argoproj/argo-cd/commit/1a023f1ca7fe4ec942b4b6696804988d5a632baf
https://github.com/argoproj/argo-cd/security/advisories/GHSA-gpx4-37g2-c8pv
https://nvd.nist.gov/vuln/detail/CVE-2025-59538
https://www.cve.org/CVERecord?id=CVE-2025-59538