An issue was discovered in Roundcube Webmail before 1.4.4. There is a cross-site scripting (XSS) vulnerability in rcube_washtml.php because JavaScript code can occur in the CDATA of an HTML message.
https://www.debian.org/security/2020/dsa-4674
https://security.gentoo.org/glsa/202007-41
https://github.com/roundcube/roundcubemail/releases/tag/1.4.4
https://github.com/roundcube/roundcubemail/compare/1.4.3...1.4.4
https://github.com/roundcube/roundcubemail/commit/87e4cd0cf2c550e77586860b94e5c75d2b7686d0
http://lists.opensuse.org/opensuse-security-announce/2020-09/msg00083.html