# CVE-2024-21652: Argo CD vulnerable to Bypassing of Brute Force Protection via Application Crash and In-Memory Data Loss

> Attackers can bypass brute force login protection by crashing the service, enabling unlimited login attempts and potential account compromise.

- **Severity:** Critical 9.8 (`CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** Yes
- **Published:** 18 Mar 2024
- **Updated:** 1 Aug 2024

## What is CVE-2024-21652?

CVE-2024-21652 is a critical vulnerability in Argoproj Argo Cd, published on 18 Mar 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. 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.

Weakness: CWE-307 (Improper Restriction of Excessive Authentication Attempts)

## Which versions are affected by CVE-2024-21652?

It affects 1 product.


Products: Argoproj Argo Cd.

## How do I fix CVE-2024-21652?

Apply the vendor's patch.

## Is CVE-2024-21652 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2024-21652 exists.

## Other vulnerabilities in Argoproj Argo Cd

- [CVE-2025-55190](https://insights.sbomify.com/CVE-2025-55190/): Argo CD: Project API Token Exposes Repository Credentials (critical 10.0)
- [CVE-2022-29165](https://insights.sbomify.com/CVE-2022-29165/): Argo CD will blindly trust JWT claims if anonymous access is enabled (critical 10.0)
- [CVE-2023-40029](https://insights.sbomify.com/CVE-2023-40029/): Cluster secret might leak in cluster details page in Argo CD (critical 9.9)
- [CVE-2022-24768](https://insights.sbomify.com/CVE-2022-24768/): Improper access control allows admin privilege escalation in Argo CD (critical 9.9)
- [CVE-2026-42880](https://insights.sbomify.com/CVE-2026-42880/): ArgoCD ServerSideDiff is vulnerable to Kubernetes Secret Extraction (critical 9.6)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2024-21652 and fix it if it is affected.

What it is: CVE-2024-21652 is a critical vulnerability in Argoproj Argo Cd, published on 18 Mar 2024. An attacker can exploit it over the internet without logging in, with no action from the victim.
Exploitation: It is not confirmed as exploited in the wild, but public exploit code for CVE-2024-21652 exists.

Affected product: Argoproj Argo Cd. No package-level version data is available, so check the vendor advisory linked from the reference page.

Task:
1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.
2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.
3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.
4. Run the tests and summarise what changed and why.
5. If nothing in the project is affected, say so and change nothing.

Reference: https://insights.sbomify.com/CVE-2024-21652/ (Markdown: https://insights.sbomify.com/CVE-2024-21652/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2024-21652
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2024-21652
- OSV: https://osv.dev/vulnerability/CVE-2024-21652

---
From sbomify Insights: https://insights.sbomify.com/CVE-2024-21652/
Summaries are generated and may contain mistakes; the official description above is the record.