CVE-2025-59531 — Unauthenticated argocd-server panic via a malicious Bitbucket-Server webhook payload

Description (CNA)

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 (CNA)

Vendor / product	Versions
argoproj / argo-cd	affected >= 1.2.0, <= 1.8.7; affected >= 2.0.0-rc1, < 2.14.20; affected >= 3.2.0-rc1, < 3.2.0-rc2; affected >= 3.1.0-rc1, < 3.1.8; affected >= 3.0.0-rc1, < 3.0.19

CWE

CWE-703

References

ADP enrichment

CISA-ADP

No English description supplied.

https://github.com/argoproj/argo-cd/security/advisories/GHSA-f9gq-prrc-hrhc