CVE-2026-40872
mailcow: dockerized vulnerable to stored XSS in autodiscover logs email address field
CVSS Score
0.0
EPSS Score
0.0%
EPSS Percentile
0th
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.
| CWE | CWE-79 CWE-80 |
| Vendor | mailcow |
| Product | mailcow-dockerized |
| Published | Apr 21, 2026 |
Stay Ahead of the Next One
Get instant alerts for mailcow mailcow-dockerized
Be the first to know when new unknown vulnerabilities affecting mailcow mailcow-dockerized are published — delivered to Slack, Telegram or Discord.
Get Free Alerts →
Free · No credit card · 60 sec setup
Affected Versions
mailcow / mailcow-dockerized
< 2026-03b