What’s Vulnerable › Vulnerabilities

CVE-2024-41960: Cross-site Scripting (XSS) via Relay Hosts Configuration in mailcow: dockerized

• Severity: medium (CVSS 4.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.3% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2024-08-05 · updated 2026-06-17
• Weakness: CWE-79

Description

mailcow: dockerized is an open source groupware/email suite based on docker. An authenticated admin user can inject a JavaScript payload into the Relay Hosts configuration. The injected payload is executed whenever the configuration page is viewed, enabling the attacker to execute arbitrary scripts in the context of the user's browser. This could lead to data theft, or further exploitation. This issue has been addressed in the `2024-07` release. All users are advised to upgrade. There are no known workarounds for this vulnerability.

Affected products

• mailcow-dockerized: before 2024-07 — fixed in 2024-07

How to fix

Upgrade to a fixed version: mailcow-dockerized 2024-07. Check the vendor advisory for mitigations.

References

• https://github.com/mailcow/mailcow-dockerized/commit/efb2572f0fa57628ad98a76a4ae884a10cac0a1a
• https://github.com/mailcow/mailcow-dockerized/security/advisories/GHSA-jpp8-rhg6-4vvv

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