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

State PUBLISHED

Description

mailcow: dockerized is an open source groupware/email suite based on docker. In versions prior to 2026-03b, the admin dashboards 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.

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