---
title: "CVE-2024-21652: Bypassing Brute Force Protection via Application Crash and In-Memory Data Loss"
url: https://erroneo.us/security/cve/CVE-2024-21652/
description: "CVE-2024-21652 (github.com/argoproj/argo-cd/v2 (Go)): Argo CD is a declarative, GitOps continuous delivery tool for Kubernetes. Prior to versions 2.8.13…"
type: vulnerability-record
section: "Security Digest"
date_published: 2024-03-18
date_modified: 2025-01-09
publisher: erroneo.us
author: erroneo.us Security Desk
cve: "CVE-2024-21652"
kev: false
cvss: 9.8
epss: 0.00751
license: All rights reserved. Quote with attribution and a link.
---

# CVE-2024-21652: Bypassing Brute Force Protection via Application Crash and In-Memory Data Loss

**Signal:** Critical and remotely reachable. No known exploitation yet, but it is network-reachable without credentials. (Computed from CISA KEV, EPSS and CVSS; not an editorial verdict.)

## Should you act?

- Not in CISA KEV , but CISA’s SSVC assessment records a public proof-of-concept, so attack code exists.
- EPSS 0.8% , percentile 54: FIRST’s model estimates a 0.8% chance of exploitation activity in the next 30 days, higher than 54% of all scored CVEs (moderate). EPSS is a probability, not a verdict.
- Remotely reachable with no login and no user interaction. If the vulnerable service is exposed to the internet, prioritize it.
- Only applies if your dependency tree includes github.com/argoproj/argo-cd/v2 (Go) < 2.8.13, fixed in 2.8.13 ; github.com/argoproj/argo-cd/v2 (Go) >= 2.9.0, < 2.9.9, fixed in 2.9.9 ; github.com/argoproj/argo-cd/v2 (Go) >= 2.10.0, < 2.10.4, fixed in 2.10.4 . Check your lockfile, including transitive dependencies.

## What it is

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 chain of vulnerabilities, including a Denial of Service (DoS) flaw and in-memory data storage weakness, to effectively bypass the application's brute force login protection. This is a critical security vulnerability that allows attackers to bypass the brute force login protection mechanism. Not only can they crash the service affecting all users, but they can also make unlimited login attempts, increasing the risk of account compromise. Versions 2.8.13, 2.9.9, and 2.10.4 contain a patch for this issue.

## Affected packages

- Go `github.com/argoproj/argo-cd/v2` < 2.8.13 → fixed: 2.8.13
- Go `github.com/argoproj/argo-cd/v2` >= 2.9.0, < 2.9.9 → fixed: 2.9.9
- Go `github.com/argoproj/argo-cd/v2` >= 2.10.0, < 2.10.4 → fixed: 2.10.4

## Affected products (CVE record)

- argoproj argo-cd: < 2.8.13, >= 2.9.0, < 2.9.9, >= 2.10.0, < 2.10.4

## Severity

- GitHub_M CVSS 3.1: 9.8 `CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H`
- GitHub CVSS 3.1: 9.8 `CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H`

## Exploitation

- CISA KEV: not listed (no confirmed in-the-wild exploitation known to CISA).
- CISA SSVC assessment: exploitation poc , automatable yes , technical impact total .
- FIRST EPSS (model of 2026-10-21): 0.75% probability of exploitation activity in the next 30 days; percentile 54.

## Sources

- [GitHub Advisory GHSA-x32m-mvfj-52xv](https://github.com/advisories/GHSA-x32m-mvfj-52xv)
- [CVE.org record CVE-2024-21652](https://www.cve.org/CVERecord?id=CVE-2024-21652)
- [NVD entry CVE-2024-21652](https://nvd.nist.gov/vuln/detail/CVE-2024-21652)
- [github.com](https://github.com/argoproj/argo-cd/security/advisories/GHSA-x32m-mvfj-52xv)
- [github.com](https://github.com/argoproj/argo-cd/commit/17b0df1168a4c535f6f37e95f25ed7cd81e1fa4d)
- [github.com](https://github.com/argoproj/argo-cd/commit/6e181d72b31522f886a2afa029d5b26d7912ec7b)
- [github.com](https://github.com/argoproj/argo-cd/commit/cebb6538f7944c87ca2fecb5d17f8baacc431456)
- [argo-cd.readthedocs.io](https://argo-cd.readthedocs.io/en/stable/security_considerations/#cve-2020-8827-insufficient-anti-automationanti-brute-force)

---
Source page: https://erroneo.us/security/cve/CVE-2024-21652/ · Security Digest: https://erroneo.us/security/ · More: https://erroneo.us/llms.txt