CVE-2024-40634
Published:July 22, 2024
Updated:September 24, 2026
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 Packages
github.com/argoproj/argo-cd/v2 (GO):
Affected version(s) >=v2.11.0 <v2.11.6Fix Suggestion:
Update to version v2.11.6github.com/argoproj/argo-cd/v2 (GO):
Affected version(s) >=v2.10.0 <v2.10.15Fix Suggestion:
Update to version v2.10.15github.com/argoproj/argo-cd/v2 (GO):
Affected version(s) >=gitops-engine/v3.6.0-rc1 <v2.9.20Fix Suggestion:
Update to version v2.9.20Related Resources (8)
Do you need more information?
Contact UsCVSS v4
Base Score:
8.7
Attack Vector
NETWORK
Attack Complexity
LOW
Attack Requirements
NONE
Privileges Required
NONE
User Interaction
NONE
Vulnerable System Confidentiality
NONE
Vulnerable System Integrity
NONE
Vulnerable System Availability
HIGH
Subsequent System Confidentiality
NONE
Subsequent System Integrity
NONE
Subsequent System Availability
NONE
CVSS v3
Base Score:
7.5
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
NONE
Integrity
NONE
Availability
HIGH
Weakness Type (CWE)
Uncontrolled Resource Consumption
EPSS
Base Score:
1.39