CVE-2025-59531
Unauthenticated argocd-server panic via a malicious Bitbucket-Server webhook payload
Argo CD is a declarative, GitOps continuous delivery tool for Kubernetes. Versions 1.2.0 through 1.8.7, 2.0.0-rc1 through 2.14.19, 3.0.0-rc1 through 3.2.0-rc1, 3.1.7 and 3.0.18 are vulnerable to malicious API requests which can crash the API server and cause denial of service to legitimate clients. Without a configured webhook.bitbucketserver.secret, Argo CD's /api/webhook endpoint crashes when receiving a malformed Bitbucket Server payload (non-array repository.links.clone field). A single unauthenticated request triggers CrashLoopBackOff, and targeting all replicas causes complete API outage. This issue is fixed in versions 2.14.20, 3.2.0-rc2, 3.1.8 and 3.0.19.
- Affected
- argoproj · argo-cd
- CVSS v3.1 GITHUB
- 7.5 HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H - EPSS
- 0.59% chance of exploitation in the next 30 days, 47th percentile
- Published
- 2025-10-01
- Updated
- 2025-10-02
Proof-of-concept exploits (1)
Security advisories
- argoproj/argo-cd/security/advisories/GHSA-f9gq-prrc-hrhc
- argoproj/argo-cd/commit/5c466a4e39802e059e75c0008ae7b7b8e842538f