PT-2025-40056 · Argo Cd · Argo Cd

Jake-Ciolek

+1

·

Published

2025-09-30

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Updated

2025-10-20

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CVE-2025-59537

CVSS v3.1
7.5
VectorAV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Name of the Vulnerable Software and Affected Versions Argo CD versions 1.2.0 through 1.8.7 Argo CD versions 2.0.0-rc1 through 2.14.19 Argo CD versions 3.0.0-rc1 through 3.2.0-rc1 Argo CD version 3.1.7 Argo CD version 3.0.18
Description Argo CD is susceptible to malicious API requests that can lead to a denial of service, crashing the API server and disrupting service for legitimate users. Specifically, the 
/api/webhook
endpoint is vulnerable when the 
webhook.gogs.secret
is not configured. In this scenario, receiving a Gogs push event with a missing or null 
commits[].repo
JSON field causes the 
argocd-server
process to crash. The 
affectedRevisionInfo
function lacks proper data structure validation for webhook event types, allowing an attacker to exploit this by sending crafted data. The vulnerability resides in the 
Handler
function, which parses webhook type messages based on the 
header
and 
body
parameters. The 
Parse
function unmarshals JSON-type messages without strict validation. An attacker can repeatedly send unauthenticated requests to the 
/api/webhook
endpoint to cause a denial of service.
Recommendations For versions 1.2.0 through 1.8.7, configure a webhook secret to ensure only trusted parties can invoke the webhook handler. For versions 2.0.0-rc1 through 2.14.19, configure a webhook secret to ensure only trusted parties can invoke the webhook handler. For versions 3.0.0-rc1 through 3.2.0-rc1, configure a webhook secret to ensure only trusted parties can invoke the webhook handler. For version 3.1.7, configure a webhook secret to ensure only trusted parties can invoke the webhook handler. For version 3.0.18, configure a webhook secret to ensure only trusted parties can invoke the webhook handler. If Gogs is not used, set the 
webhook.gogs.secret
to a long, random value to disable Gogs payload handling.

Exploit

Fix

DoS

NULL Pointer Dereference

RCE

Weakness Enumeration

CWE-476CWE-20

Related Identifiers

BIT-ARGO-CD-2025-59537
CVE-2025-59537
GHSA-WP4P-9PXH-CGX2

Affected Products

Argo Cd