CVE-2007-6321: Roundcube Webmail

Medium severity, CVSS 4.3. EPSS: 5.4% chance of exploitation in the next 30 days.

Cross-site scripting (XSS) vulnerability in RoundCube webmail 0.1rc2, 2007-12-09, and earlier versions, when using Internet Explorer, allows remote attackers to inject arbitrary web script or HTML via style sheets containing expression commands.

Affected products

• Roundcube Webmail: up to and including 0.1

Published 2007-12-12. Last modified 2026-06-16.