# CVE-2024-23824: mailcow ipixel flood attack leads to Denial of Service in admin page

> Attackers can cause denial of service in the mailcow admin page by uploading a malicious pixel flood payload to the logo.

- **Severity:** Medium 4.7 (`CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:L/I:L/A:L`)
- **Exploited in the wild:** Not known
- **Login needed:** An administrator
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 2 Feb 2024
- **Updated:** 17 Jun 2025
- **Also known as:** GHSA-45rv-3c5p-w4h7

## What is CVE-2024-23824?

CVE-2024-23824 is a medium-severity denial of service vulnerability in mailcow-dockerized, published on 2 Feb 2024. An attacker needs administrator access to exploit it, with no action from the victim.

### Official description

mailcow is a dockerized email package, with multiple containers linked in one bridged network. The application is vulnerable to pixel flood attack, once the payload has been successfully uploaded in the logo the application goes slow and doesn't respond in the admin page. It is tested on the versions 2023-12a and prior and patched in version 2024-01.

Weakness: CWE-400 (Uncontrolled Resource Consumption)

## Which versions are affected by CVE-2024-23824?

It affects 1 product.


Products: Mailcow Mailcow\.

## How do I fix CVE-2024-23824?

No fix has been published for CVE-2024-23824 yet. Limit exposure of the affected software until one is available.

## Is CVE-2024-23824 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2024-23824 exists.

## Other vulnerabilities in mailcow-dockerized

- [CVE-2025-53909](https://insights.sbomify.com/CVE-2025-53909/): mailcow: dockerized vulnerable to SSTI in Quota and Quarantine Notification Template (critical 9.1)
- [CVE-2024-24760](https://insights.sbomify.com/CVE-2024-24760/): Mailcow Docker Container Exposure to Local Network (high 8.8)
- [CVE-2023-34108](https://insights.sbomify.com/CVE-2023-34108/): Manipulation of Internal Dovecot Variables in mailcow via crafted Passwords (high 8.8)
- [CVE-2022-31138](https://insights.sbomify.com/CVE-2022-31138/): OS Command Injection in mailcow (high 8.8)
- [CVE-2022-31245](https://insights.sbomify.com/CVE-2022-31245/): Command injection in n/a (high 8.8)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2024-23824 and fix it if it is affected.

What it is: CVE-2024-23824 is a medium-severity denial of service vulnerability in mailcow-dockerized, published on 2 Feb 2024. An attacker needs administrator access to exploit it, with no action from the victim.
Exploitation: It is not confirmed as exploited in the wild, but public exploit code for CVE-2024-23824 exists.

Affected product: mailcow-dockerized. 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-2024-23824/ (Markdown: https://insights.sbomify.com/CVE-2024-23824/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2024-23824
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2024-23824
- OSV: https://osv.dev/vulnerability/CVE-2024-23824

---
From sbomify Insights: https://insights.sbomify.com/CVE-2024-23824/
Summaries are generated and may contain mistakes; the official description above is the record.