CVE-2018-16736: Rcfilters Project Rcfilters

Medium severity, CVSS 5.4. EPSS: 2.6% chance of exploitation in the next 30 days.

In the rcfilters plugin 2.1.6 for Roundcube, XSS exists via the _whatfilter and _messages parameters (in the Filters section of the settings).

Affected products

• Rcfilters Project Rcfilters: version 2.1.6 only

Published 2018-09-09. Last modified 2026-06-17.