CVE-2026-48848: Roundcube Webmail

High severity, CVSS 7.2. EPSS: 0.4% chance of exploitation in the next 30 days.

Roundcube Webmail 1.6.x before 1.6.16 and 1.7.x before 1.7 has insufficient HTML sanitization that could lead to Cascading Style Sheets (CSS) injection via an SVG document that has an animate element with the attributeName attribute.

Affected products

• Roundcube Webmail: from 1.6.0, before 1.6.16 (fixed in 1.6.16); from 1.7.0, before 1.7.1 (fixed in 1.7.1)

Published 2026-05-25. Last modified 2026-07-24.