Security Advisory

CVE-2026-40872

CVE vulnerability detail - eXtreme Datacenter Security Operations

Published 2026-04-21 19:14:45

Last updated 2026-04-22 13:37:20

Assigner GitHub_M

CVSS score 9.3

State PUBLISHED

Description

mailcow: dockerized is an open source groupware/email suite based on docker. In versions prior to 2026-03b, the admin dashboard's Autodiscover logs render the EMailAddress value (logged as the "user" field) without HTML escaping. By submitting an unauthenticated Autodiscover request with a crafted EMailAddress containing HTML/JS, the payload is stored in Redis and executed when an admin views the Autodiscover logs. Version 2026-03b fixes the vulnerability.

← Browse all CVEs View on cve.org ↗