A roundcube security update has been released for Debian GNU/Linux 9 LTS to address a cross-site scripting vulnerability.

DLA 2508-1: roundcube security update

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Debian LTS Advisory DLA-2508-1 debian-lts@lists.debian.org
  https://www.debian.org/lts/security/ Utkarsh Gupta
December 28, 2020   https://wiki.debian.org/LTS
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Package : roundcube
Version : 1.2.3+dfsg.1-4+deb9u8
CVE ID : CVE-2020-35730
Debian Bug : 978491

An issue was discovered in roundcube where in a cross-site scripting
(XSS) via HTML or plain text messages with malicious content was
possible.

For Debian 9 stretch, this problem has been fixed in version
1.2.3+dfsg.1-4+deb9u8.

We recommend that you upgrade your roundcube packages.

For the detailed security status of roundcube please refer to
its security tracker page at:
  https://security-tracker.debian.org/tracker/roundcube

Further information about Debian LTS security advisories, how to apply
these updates to your system and frequently asked questions can be
found at:   https://wiki.debian.org/LTS