Denial of Service Vulnerability in Argo CD by Argo Project
CVE-2025-59531

7.5HIGH

Key Information:

Vendor

Argoproj

Status
Argo-cd
Vendor
CVE Published:
1 October 2025

What is CVE-2025-59531?

Argo CD, a well-regarded tool for GitOps continuous delivery in Kubernetes, is susceptible to a denial of service vulnerability. This issue arises from the handling of malformed API requests directed at the /api/webhook endpoint when no appropriate webhook.bitbucketserver.secret is configured. Specifically, if a non-array structure is included in the repository.links.clone field of a Bitbucket Server payload, a single unauthenticated request can initiate a CrashLoopBackOff state, effectively disrupting service for all users. This means that while legitimate clients are unable to access the API, merely targeting all replicas can lead to a complete outage. This vulnerability has been addressed in the latest versions: 2.14.20, 3.2.0-rc2, 3.1.8, and 3.0.19.

Affected Version(s)

argo-cd >= 1.2.0, <= 1.8.7 <= 1.2.0, 1.8.7

argo-cd >= 2.0.0-rc1, < 2.14.20 < 2.0.0-rc1, 2.14.20

argo-cd >= 3.2.0-rc1, < 3.2.0-rc2 < 3.2.0-rc1, 3.2.0-rc2

References

https://github.com/argoproj/argo-cd/security/advisories/G...
x_refsource_CONFIRM
https://github.com/argoproj/argo-cd/commit/5c466a4e39802e...
x_refsource_MISC

CVSS V3.1

Score:
7.5
Severity:
HIGH
Confidentiality:
None
Integrity:
None
Availability:
None
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

JSON
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CVE-2025-59531 : Denial of Service Vulnerability in Argo CD by Argo Project