Roundcube before 1.4.11 allows XSS via crafted Cascading Style Sheets (CSS) token sequences during HTML email rendering.
Created roundcubemail tracking bugs for this issue:
Affects: epel-7 [bug 1926859]
Affects: fedora-all [bug 1926858]
This CVE Bugzilla entry is for community support informational purposes only as it does not affect a package in a commercially supported Red Hat product. Refer to the dependent bugs for status of those individual community products.