CVE-2025-59538
Argo CD is Vulnerable to Unauthenticated Remote DoS via malformed Azure DevOps git.push webhook
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.
INFO
Published Date :
Oct. 1, 2025, 9:16 p.m.
Last Modified :
Oct. 7, 2025, 2:28 p.m.
Remotely Exploit :
Yes !
Source :
[email protected]
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS 3.1 | HIGH | [email protected] |
Solution
- Update Argo CD to version 2.14.20 or later.
- Update Argo CD to version 3.2.0-rc2 or later.
- Update Argo CD to version 3.1.8 or later.
- Update Argo CD to version 3.0.19 or later.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2025-59538.
| URL | Resource |
|---|---|
| https://github.com/argoproj/argo-cd/commit/1a023f1ca7fe4ec942b4b6696804988d5a632baf | Patch |
| https://github.com/argoproj/argo-cd/security/advisories/GHSA-gpx4-37g2-c8pv | Exploit Vendor Advisory |
| https://github.com/argoproj/argo-cd/security/advisories/GHSA-gpx4-37g2-c8pv | Exploit Vendor Advisory |
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2025-59538 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2025-59538
weaknesses.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2025-59538 vulnerability anywhere in the article.
-
Daily CyberSecurity
DoS Flaws in Argo CD: Unauthenticated Attackers Can Crash Kubernetes Server with Single Request
The Argo CD project has released patches addressing several denial-of-service (DoS) vulnerabilities that could allow attackers to crash the argocd-server process with a single unauthenticated HTTP req ... Read more
The following table lists the changes that have been made to the
CVE-2025-59538 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
-
Initial Analysis by [email protected]
Oct. 07, 2025
Action Type Old Value New Value Added CPE Configuration OR *cpe:2.3:a:argoproj:argo_cd:*:*:*:*:*:*:*:* versions from (including) 3.0.0 up to (excluding) 3.0.19 *cpe:2.3:a:argoproj:argo_cd:*:*:*:*:*:*:*:* versions from (including) 3.1.0 up to (excluding) 3.1.8 *cpe:2.3:a:argoproj:argo_cd:3.2.0:rc1:*:*:*:*:*:* *cpe:2.3:a:argoproj:argo_cd:*:*:*:*:*:*:*:* versions from (including) 2.9.0 up to (excluding) 2.14.20 Added Reference Type GitHub, Inc.: https://github.com/argoproj/argo-cd/commit/1a023f1ca7fe4ec942b4b6696804988d5a632baf Types: Patch Added Reference Type CISA-ADP: https://github.com/argoproj/argo-cd/security/advisories/GHSA-gpx4-37g2-c8pv Types: Exploit, Vendor Advisory Added Reference Type GitHub, Inc.: https://github.com/argoproj/argo-cd/security/advisories/GHSA-gpx4-37g2-c8pv Types: Exploit, Vendor Advisory -
CVE Modified by 134c704f-9b21-4f2e-91b3-4a467353bcc0
Oct. 02, 2025
Action Type Old Value New Value Added Reference https://github.com/argoproj/argo-cd/security/advisories/GHSA-gpx4-37g2-c8pv -
New CVE Received by [email protected]
Oct. 01, 2025
Action Type Old Value New Value Added 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. Added CVSS V3.1 AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H Added CWE CWE-248 Added CWE CWE-703 Added Reference https://github.com/argoproj/argo-cd/commit/1a023f1ca7fe4ec942b4b6696804988d5a632baf Added Reference https://github.com/argoproj/argo-cd/security/advisories/GHSA-gpx4-37g2-c8pv