CVE-2015-5381: Roundcube Webmail

Medium severity, CVSS 6.1. EPSS: 2.7% chance of exploitation in the next 30 days.

Cross-site scripting (XSS) vulnerability in program/include/rcmail.php in Roundcube Webmail 1.1.x before 1.1.2 allows remote attackers to inject arbitrary web script or HTML via the _mbox parameter to the default URI.

Affected products

• Roundcube Roundcube Webmail: version 1.1.1 only
• Roundcube Webmail: version 1.1 only

Published 2017-05-23. Last modified 2026-06-17.