CVE-2024-40634
Argo CD Unauthenticated Denial of Service (DoS) Vulnerability via /api/webhook Endpoint
7.5
HIGH
CVSS 3.1
EPSS 2.6%
Description
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.
How to fix CVE-2024-40634
To remediate CVE-2024-40634, upgrade the affected package to a fixed version below.
- —upgrade to 2.11.6 or later
- —no fix listed
- —no fix listed
- —upgrade to 2.9.20 or later
- —upgrade to 2.9.20 or later
Is CVE-2024-40634 being exploited?
Low — EPSS is 2.6%, meaning exploitation activity has not been observed at scale.
Affected packages (5)
- >= 1.0.0, < 2.11.6
- >= 1.0.0, <= 1.8.7
- >= 1.0.0
- from 0, < 2.9.20
- from 0, < 2.9.20, >= 2.10.0, < 2.10.15, >= 2.11.0, < 2.11.6
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 4.0 | — | CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N |
| osv | CVSS 3.1 | HIGH7.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |