CVE-2025-59531

Unauthenticated argocd-server panic via a malicious Bitbucket-Server webhook payload

State: Published
Severity: 7.5 High
Published: Oct 1, 2025
Updated: Oct 2, 2025
Reserved: Sep 17, 2025

Description

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.

Scores

CVSS	Score	Vector	Source
3.1	7.5 High	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H	GitHub_M

Weaknesses

CWE-703 Improper Check or Handling of Exceptional Conditions

Affected Products

Product	Versions
argo-cdargoproj	>= 1.2.0, <= 1.8.7Affected >= 2.0.0-rc1, < 2.14.20Affected >= 3.2.0-rc1, < 3.2.0-rc2Affected >= 3.1.0-rc1, < 3.1.8Affected >= 3.0.0-rc1, < 3.0.19Affected

References

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