CVE-2024-40634 Argo CD Unauthenticated Denial of Service (DoS) Vulnerability via /api/webhook Endpoint
Unauthenticated attackers can cause Argo CD service disruption by sending large JSON payloads to the webhook endpoint, triggering an Out Of Memory kill.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2024-40634?
CVE-2024-40634 is a high-severity denial of service vulnerability in Argoproj Argo Cd, published on 22 Jul 2024. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official 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.
Weakness: CWE-400
Which versions are affected by CVE-2024-40634?
11 open source packages ship an affected version, including github.com/argoproj/argo-cd/v2, argo-cd and github.com/argoproj/argo-cd. It affects 1 product.
| Package | Affected | Fixed in |
|---|---|---|
github.com/argoproj/argo-cd/v2 Go | All versions | 2.9.20, 2.10.15, 2.11.6 |
github.com/argoproj/argo-cd/v2 Go | All versions | 2.9.20 |
github.com/argoproj/argo-cd/v2 Go | All versions | 2.9.20 |
github.com/argoproj/argo-cd/v2 Go | From 2.10.0 | 2.10.15 |
github.com/argoproj/argo-cd/v2 Go | From 2.10.0 | 2.10.15 |
github.com/argoproj/argo-cd/v2 Go | From 2.11.0 | 2.11.6 |
5 more packages
github.com/argoproj/argo-cd/v2 Go | From 2.11.0 | 2.11.6 |
argo-cd Bitnami | From 1.0.0 | 2.11.6 |
github.com/argoproj/argo-cd Go | From 1.0.0 | None |
github.com/argoproj/argo-cd Go | From 1.0.0 to 1.8.7 | None |
github.com/argoproj/argo-cd Go | From 1.0.0 to 1.8.7 | None |
Products include Argoproj Argo Cd.
How do I fix CVE-2024-40634?
Upgrade github.com/argoproj/argo-cd/v2 to a fixed version for your release line: 2.9.20, 2.10.15 or 2.11.6.
Upgrade, then put limits on request size, rate and nesting depth so one client cannot exhaust the service. More about Denial of service.
Is CVE-2024-40634 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2024-40634 exists.
Other vulnerabilities in Argoproj Argo Cd
- CVE-2025-55190 Argo CD: Project API Token Exposes Repository Credentials
- CVE-2022-29165 Argo CD will blindly trust JWT claims if anonymous access is enabled
- CVE-2023-40029 Cluster secret might leak in cluster details page in Argo CD
- CVE-2022-24768 Improper access control allows admin privilege escalation in Argo CD
- CVE-2024-21652 Argo CD vulnerable to Bypassing of Brute Force Protection via Application Crash and In-Memory Data Loss
Sources
Also known as BIT-argo-cd-2024-40634, GHSA-jmvp-698c-4x3w, GO-2024-3002.