CVE-2026-7460: Mailcow Mailcow-Dockerized

High severity, CVSS 7.4. EPSS: 0.4% chance of exploitation in the next 30 days.

mailcow-dockerized contains a stored cross-site scripting vulnerability in the administrator Queue Manager. The Queue Manager fetches mail queue entries from /api/v1/get/mailq/all, copies server-controlled Postfix queue fields into DataTables rows, and renders several of those fields as HTML without adequate output encoding. This issue affects mailcow-dockerized: 2026-03b.

Affected products

• Mailcow Mailcow-Dockerized: version 2026-03b only

Published 2026-05-20. Last modified 2026-07-24.