CVE-2025-59537
Unknown Unknown - Not Provided
BaseFortify

Publication date: 2025-10-01

Last updated on: 2025-10-07

Assigner: GitHub, Inc.

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.
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Meta Information
Published
2025-10-01
Last Modified
2025-10-07
Generated
2026-06-16
AI Q&A
2025-10-01
EPSS Evaluated
2026-06-15
NVD
CVE-2025-59537
Affected Vendors & Products
Showing 5 associated CPEs
Vendor Product Version / Range
argoproj argo_cd From 1.2.0 (inc) to 1.8.7 (inc)
argoproj argo_cd From 2.0.0 (inc) to 2.14.20 (exc)
argoproj argo_cd From 3.0.0 (inc) to 3.0.19 (exc)
argoproj argo_cd From 3.1.0 (inc) to 3.1.8 (exc)
argoproj argo_cd 3.2.0
Helpful Resources
Exploitability
CWE
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KEV
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CWE ID Description
CWE-476 The product dereferences a pointer that it expects to be valid but is NULL.
CWE-20 The product receives input or data, but it does not validate or incorrectly validates that the input has the properties that are required to process the data safely and correctly.
Attack-Flow Graph
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Executive Summary

This vulnerability in Argo CD allows malicious API requests to crash the API server, causing a denial of service. Specifically, when the /api/webhook endpoint receives a Gogs push event with a missing or null commits[].repo JSON field and no webhook.gogs.secret is set, the entire argocd-server process crashes.

Impact Analysis

The vulnerability can cause the Argo CD API server to crash, resulting in denial of service to legitimate clients. This means users may be unable to access or use Argo CD until the server is restarted or patched.

Mitigation Strategies

To mitigate this vulnerability, upgrade Argo CD to one of the fixed versions: 2.14.20, 3.2.0-rc2, 3.1.8, or 3.0.19. Additionally, configure a webhook.gogs.secret to avoid the default configuration that allows the /api/webhook endpoint to crash when receiving malformed Gogs push events.

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