CVE-2025-59537

argo-cd is vulnerable to unauthenticated DoS attack via malformed Gogs 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. With the default configuration, no webhook.gogs.secret set, Argo CD’s /api/webhook endpoint will crash the entire argocd-server process when it receives a Gogs push event whose JSON field commits[].repo is not set or is null. 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-20 Improper Input Validation
CWE-476 NULL Pointer Dereference

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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