Vulnerability · Published Oct 1, 2025 · Assigned by GitHub_M
CVE-2025-59531Unauthenticated argocd-server panic via a malicious Bitbucket-Server webhook payload
High 7.5
In plain English
A high-severity security flaw in argo-cd from argoproj. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.6% (higher than 48% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Official 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.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Go | github.com/argoproj/argo-cd | no fix listed | GO-2025-3993 |
| Go | github.com/argoproj/argo-cd | no fix listed | GHSA-f9gq-prrc-hrhc |
| Go | github.com/argoproj/argo-cd/v2 | 2.14.20 | GHSA-f9gq-prrc-hrhc |
| Go | github.com/argoproj/argo-cd/v2 | 2.14.20 | GO-2025-3993 |
| Go | github.com/argoproj/argo-cd/v3 | 3.0.19, 3.1.8, 3.2.0-rc2 | GO-2025-3993 |
| Go | github.com/argoproj/argo-cd/v3 | 3.2.0-rc2 | GHSA-f9gq-prrc-hrhc |
| Go | github.com/argoproj/argo-cd/v3 | 3.1.8 | GHSA-f9gq-prrc-hrhc |
| Go | github.com/argoproj/argo-cd/v3 | 3.0.19 | GHSA-f9gq-prrc-hrhc |
Affected products (as reported)
Weakness: CWE-703 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H