What’s Vulnerable › Vulnerabilities

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

• Severity: low (CVSS 2.7 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.6% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2024-02-02 · updated 2026-06-17
• Weakness: CWE-400

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.

Affected products

• mailcow-dockerized: before 2024-01 — fixed in 2024-01

How to fix

Upgrade to a fixed version: mailcow-dockerized 2024-01. Check the vendor advisory for mitigations.

References

• https://github.com/0xbunniee/MailCow-Pixel-Flood-Attack
• https://github.com/mailcow/mailcow-dockerized/commit/7f6f7e0e9ff608618e5b144bcf18d279610aa3ed
• https://github.com/mailcow/mailcow-dockerized/security/advisories/GHSA-45rv-3c5p-w4h7
• https://github.com/0xbunniee/MailCow-Pixel-Flood-Attack
• https://github.com/mailcow/mailcow-dockerized/commit/7f6f7e0e9ff608618e5b144bcf18d279610aa3ed
• https://github.com/mailcow/mailcow-dockerized/security/advisories/GHSA-45rv-3c5p-w4h7

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