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CVE-2025-59538

7.5 · HIGH

Argo CD is a declarative, GitOps continuous delivery tool for Kubernetes.

Published Oct 1, 2025CWE-248EPSS 8.93%

Overview

CVE-2025-59538 is a high-severity vulnerability. It was published on October 1, 2025 and has a CVSS 3.1 base score of 7.5 (HIGH).

This vulnerability has a CVSS 3.1 base score of 7.5, rated HIGH. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

Technical description

Argo CD is a declarative, GitOps continuous delivery tool for Kubernetes. For versions 2.9.0-rc1 through 2.14.19, 3.0.0-rc1 through 3.2.0-rc1, 3.1.6 and 3.0.17, when the webhook.azuredevops.username and webhook.azuredevops.password are not set in the default configuration, the /api/webhook endpoint crashes the entire argocd-server process when it receives an Azure DevOps Push event whose JSON array resource.refUpdates is empty. The slice index [0] is accessed without a length check, causing an index-out-of-range panic. A single unauthenticated HTTP POST is enough to kill the process. This issue is resolved in versions 2.14.20, 3.2.0-rc2, 3.1.8 and 3.0.19.

Remediation

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

References

GitHubgithub.com/argoproj/argo-cd/commit/1a023f1ca7fe4ec942b4b6696804988d5a632bafGitHubgithub.com/argoproj/argo-cd/security/advisories/GHSA-gpx4-37g2-c8pvGitHubgithub.com/argoproj/argo-cd/security/advisories/GHSA-gpx4-37g2-c8pv

How CyberStrike helps

Frequently asked questions

What is CVE-2025-59538?

CVE-2025-59538 is a high-severity vulnerability. It was published on October 1, 2025 and has a CVSS 3.1 base score of 7.5 (HIGH).

How severe is CVE-2025-59538?

This vulnerability has a CVSS 3.1 base score of 7.5, rated HIGH. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

How do I fix or remediate CVE-2025-59538?

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

How can CyberStrike help with CVE-2025-59538?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2025-59538 is actually reachable in your own applications and APIs, then verifies each finding before reporting it. That tells you if the weakness is a real, exploitable risk in your environment or a false positive you can safely deprioritize.

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