CVE-2020-18671: Roundcube Webmail

Medium severity, CVSS 5.4. EPSS: 0.8% chance of exploitation in the next 30 days.

Cross Site Scripting (XSS) vulnerability in Roundcube Mail <=1.4.4 via smtp config in /installer/test.php.

Affected products

• Roundcube Webmail: up to and including 1.4.4

Published 2021-06-24. Last modified 2026-06-17.