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HIGH

CVE-2024-40634

CVSS v3

7.5

HIGH

EPSS Score

1.4 %

exploit probability, as of 2026-10-19

CISA KEV

No

known exploited

Exploitation

—

SSVC status

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Affected and fixed versions

Packages from OSV.dev and products from the vendors' CSAF advisories.

version not verifiedVersions not verified: read as OSV.dev and the vendors publish them, not checked against each vendor's release list.

Packages

  • argo-cdBitnamifrom 1.0.0 · fixed in 2.11.6
  • github.com/argoproj/argo-cdGofrom 1.0.0 · no fixed version listed
  • github.com/argoproj/argo-cd/v2Goall versions · fixed in 2.9.20

Vendor advisories

  • CVE-2024-40634 Red Hat Product Security103 products fixed

    argocd: Unauthenticated Denial of Service (DoS) Vulnerability via /api/webhook Endpoint in Argo CD

  • RHSA-2024:4973 Red Hat Product Security35 products fixed

    Red Hat Security Advisory: Errata Advisory for Red Hat OpenShift GitOps v1.12.5 security update

  • RHSA-2024:4972 Red Hat Product Security33 products fixed

    Red Hat Security Advisory: Errata Advisory for Red Hat OpenShift GitOps v1.11.7 security update

  • RHSA-2024:4891 Red Hat Product Security35 products fixed

    Red Hat Security Advisory: Errata Advisory for Red Hat OpenShift GitOps v1.13.1 security update

Full record on NVD

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.

Technical details

Published
2024-07-22

Frequently asked questions

What is CVE-2024-40634?

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.

Is CVE-2024-40634 actively exploited?

Active exploitation of CVE-2024-40634 has not been confirmed. Its EPSS score was 1.4% on 2026-10-19, the estimated probability of exploitation in the next 30 days.

What is the CVSS score for CVE-2024-40634?

CVE-2024-40634 has a CVSS v3 base score of 7.5 (HIGH severity).

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