CVE-2024-40634: Argoproj Argo Cd

High severity, CVSS 7.5. EPSS: 1.4% chance of exploitation in the next 30 days.

Argo CD is a declarative, GitOps continuous delivery tool for Kubernetes. This report details a security vulnerability in Argo CD, where an unauthenticated attacker can send a specially crafted large JSON payload to the /api/webhook endpoint, causing excessive memory allocation that leads to service disruption by triggering an Out Of Memory (OOM) kill. The issue poses a high risk to the availability of Argo CD deployments. This vulnerability is fixed in 2.11.6, 2.10.15, and 2.9.20.

Affected products

• Argoproj Argo Cd: from 1.0.0, before 2.9.20 (fixed in 2.9.20); from 2.10.0, before 2.10.15 (fixed in 2.10.15); from 2.11.0, before 2.11.6 (fixed in 2.11.6)

Published 2024-07-22. Last modified 2026-06-17.