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CVE-2025-59538— Argo CD is Vulnerable to Unauthenticated Remote DoS via malformed Azure DevOps git.push webhook

Quick assessment

Affected
argoproj argo-cd
Exploitation
High exploitation probability; assess promptly
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Argo CD是Argo开源的一个用于Kubernetes的声明性GitOps连续交付工具。 Argo CD存在安全漏洞，该漏洞源于未检查JSON数组长度，可能导致拒绝服务攻击。以下版本受到影响：2.9.0-rc1版本至2.14.19版本、3.0.0-rc1版本至3.2.0-rc1版本、3.1.6版本和3.0.17版本。

CVSS 7.5 · High EPSS 8.93% · P95

Possible ATT&CK Techniques 1 AI

T1499 · Endpoint Denial of Service
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I. Basic Information for CVE-2025-59538

Vulnerability Information
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Vulnerability Title
Argo CD is Vulnerable to Unauthenticated Remote DoS via malformed Azure DevOps git.push webhook
Source: CVE Program / CVE List V5
Vulnerability 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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
未捕获的异常
Source: CVE Program / CVE List V5
Vulnerability Title
Argo CD 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Argo CD是Argo开源的一个用于Kubernetes的声明性GitOps连续交付工具。 Argo CD存在安全漏洞，该漏洞源于未检查JSON数组长度，可能导致拒绝服务攻击。以下版本受到影响：2.9.0-rc1版本至2.14.19版本、3.0.0-rc1版本至3.2.0-rc1版本、3.1.6版本和3.0.17版本。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
argoproj argo-cd >= 2.9.0-rc1, < 2.14.20 -

II. Public POCs for CVE-2025-59538

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III. Intelligence Information for CVE-2025-59538

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Patches & Fixes for CVE-2025-59538 (1)

Vendor Advisories for CVE-2025-59538 (1)

Same Patch Batch · argoproj · 2025-10-01 · 3 CVEs total

CVE-2025-59537 7.5 HIGH argo-cd is vulnerable to unauthenticated DoS attack via malformed Gogs webhook payload
CVE-2025-59531 7.5 HIGH Unauthenticated argocd-server panic via a malicious Bitbucket-Server webhook payload

IV. Related Vulnerabilities

Same product: argo-cd
Same vendor: argoproj
Same weakness: CWE-248

V. Comments for CVE-2025-59538

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