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TI-2024-14382 Aliases CVE-2024-21661GHSA-6v85-wr92-q4p7

Argo CD Denial of Service (DoS) Vulnerability Due to Unsafe Array Modification in Multi-threaded Environment

Priority HIGH 72CWE-787Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
Low
Impact type
Denial of service
Confidentiality · integrity · availability
None · None · High
Fix status
Partial Red Hat: 3 fixed, 1 without a fix

Attack profile from CVSS 3.1 · CNA. Fix status from CNA, GitHub and Red Hat. Impact type from CWE-787 and the CVSS impact.

Summary

Argo CD is a declarative, GitOps continuous delivery tool for Kubernetes. Prior to versions 2.8.13, 2.9.9, and 2.10.4, an attacker can exploit a critical flaw in the application to initiate a Denial of Service (DoS) attack, rendering the application inoperable and affecting all users. The issue arises from unsafe manipulation of an array in a multi-threaded environment. The vulnerability is rooted in the application's code, where an array is being modified while it is being iterated over. This is a classic programming error but becomes critically unsafe when executed in a multi-threaded environment. When two threads interact with the same array simultaneously, the application crashes. This is a Denial of Service (DoS) vulnerability. Any attacker can crash the application continuously, making it impossible for legitimate users to access the service. The issue is exacerbated because it does not require authentication, widening the pool of potential attackers. Versions 2.8.13, 2.9.9, and 2.10.4 contain a patch for this issue.

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.01176 67th percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by NVD
Fix Partial argo-cd (argoproj): 2.8.13, 2.9.9, 2.10.4github.com/argoproj/argo-cd/v2 (Go): 2.8.13, 2.9.9, 2.10.4Red Hat: 4 advisoriesRed Hat: 3 fixed, 1 without a fix

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
Poc
Automatable
Yes
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
argoprojargo-cdbefore 2.8.13; 2.9.0 to before 2.9.9; 2.10.0 to before 2.10.42.8.13, 2.9.9, 2.10.4Patch availableCNA
—github.com/argoproj/argo-cd (Go)up to 1.8.7—No fix listedGHSA-6v85-wr92-q4p7
—github.com/argoproj/argo-cd/v2 (Go)before 2.8.132.8.13Patch availableGHSA-6v85-wr92-q4p7
—github.com/argoproj/argo-cd/v2 (Go)2.9.0 to before 2.9.92.9.9Patch availableGHSA-6v85-wr92-q4p7
—github.com/argoproj/argo-cd/v2 (Go)2.10.0 to before 2.10.42.10.4Patch availableGHSA-6v85-wr92-q4p7
  • argo-cd Vendorargoproj Affected before 2.8.13; 2.9.0 to before 2.9.9; 2.10.0 to before 2.10.4 Fixed in 2.8.13, 2.9.9, 2.10.4 Patch available CNA
  • github.com/argoproj/argo-cd (Go) Vendor— Affected up to 1.8.7 Fixed in — No fix listed GHSA-6v85-wr92-q4p7
  • github.com/argoproj/argo-cd/v2 (Go) Vendor— Affected before 2.8.13 Fixed in 2.8.13 Patch available GHSA-6v85-wr92-q4p7
  • github.com/argoproj/argo-cd/v2 (Go) Vendor— Affected 2.9.0 to before 2.9.9 Fixed in 2.9.9 Patch available GHSA-6v85-wr92-q4p7
  • github.com/argoproj/argo-cd/v2 (Go) Vendor— Affected 2.10.0 to before 2.10.4 Fixed in 2.10.4 Patch available GHSA-6v85-wr92-q4p7

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:argoproj:argo_cd:*:*:*:*:*:*:*:*before 2.8.13; 2.9.0 to before 2.9.9; 2.10.0 to before 2.10.4Vulnerableargoproj
  • cpe:2.3:a:argoproj:argo_cd:*:*:*:*:*:*:*:* Versions before 2.8.13; 2.9.0 to before 2.9.9; 2.10.0 to before 2.10.4 Vulnerable ·argoproj

Remediation

  • Fix · CNA argo-cd (argoproj) Fixed in 2.8.13, 2.9.9, 2.10.4
  • Fix · GHSA-6v85-wr92-q4p7 github.com/argoproj/argo-cd/v2 (Go) Fixed in 2.8.13 Advisory →
  • Fix · GHSA-6v85-wr92-q4p7 github.com/argoproj/argo-cd/v2 (Go) Fixed in 2.9.9 Advisory →
  • Fix · GHSA-6v85-wr92-q4p7 github.com/argoproj/argo-cd/v2 (Go) Fixed in 2.10.4 Advisory →

Red Hat 4 advisories

  • RHSA-2024:1753 Released 2024-04-10 · Red Hat rating Important
    Errata Advisory for Red Hat OpenShift GitOps v1.12.1 security update
    • Red Hat OpenShift GitOps 1.12 openshift-gitops-1/argo-rollouts-rhel8, openshift-gitops-1/argocd-rhel8, openshift-gitops-1/argocd-rhel9 +7
  • RHSA-2024:1752 Released 2024-04-10 · Red Hat rating Important
    GitOps 1.12.1- Argo CD CLI and MicroShift GitOps security update
    • Red Hat OpenShift GitOps 1.12 microshift-gitops-1.12.1-4.el9, microshift-gitops-release-info-1.12.1-4.el9, openshift-gitops-argocd-cli-1.12.1-4.el9 +3
  • RHSA-2024:1700 Released 2024-04-08 · Red Hat rating Important
    Errata Advisory for Red Hat OpenShift GitOps v1.10.4 security update
    • Red Hat OpenShift GitOps 1.10 openshift-gitops-1/argo-rollouts-rhel8, openshift-gitops-1/argocd-rhel8, openshift-gitops-1/console-plugin-rhel8 +6
Show 1 more Red Hat advisories
  • RHSA-2024:1697 Released 2024-04-08 · Red Hat rating Important
    Errata Advisory for Red Hat OpenShift GitOps v1.11.3 security update
    • Red Hat OpenShift GitOps 1.11 openshift-gitops-1/argo-rollouts-rhel8, openshift-gitops-1/argocd-rhel8, openshift-gitops-1/console-plugin-rhel8 +6

Vendor assessments

Red Hat

Red Hat rating: Important. Red Hat's page for this CVE →

ProductStatusPlan or fix
Red Hat Openshift Data Foundation 4AffectedNo fix yet
Red Hat OpenShift GitOps 1.10Fixed RHSA-2024:1700
Red Hat OpenShift GitOps 1.11Fixed RHSA-2024:1697
Red Hat OpenShift GitOps 1.12Fixed RHSA-2024:1752, RHSA-2024:1753

Timeline

  1. 2026-10-02 Threatist record created from CVE-2024-21661
  2. 2026-10-03 Alias added: GHSA-6v85-wr92-q4p7

References

Exploit 1

Patch 3

Advisory 1

Other 2

  • TI-2024-14377 Argo CD vulnerable to Bypassing of Brute Force Protection via Application Crash and In-Memory Data Loss CVSS 3.1CRITICAL 9.8
  • TI-2024-14383 Argo CD vulnerable to Bypassing of Rate Limit and Brute Force Protection Using Cache Overflow CVSS 3.1CRITICAL 9.1
  • TI-2026-31086 ArgoCD ServerSideDiff is vulnerable to Kubernetes Secret Extraction CVSS 3.1CRITICAL 9.6
  • TI-2023-20919 Cluster secret might leak in cluster details page in Argo CD CVSS 3.1CRITICAL 9.9
  • TI-2024-21088 ArgoCD Vulnerable to Use of Risky or Missing Cryptographic Algorithms in Redis Cache CVSS 3.1CRITICAL 9.1
  • TI-2026-33475 Argo CD: Stored XSS in application link annotations enables developer-to-admin privilege escalation CVSS 3.1HIGH 8.7
See all 56 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences