A roundcube security update security update has been released for Debian GNU/Linux 9 LTS to address a cross-site scripting vulnerabilities in handling invalid svg and math tag content.

DLA 2322-1: roundcube security update

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Debian LTS Advisory DLA-2322-1 debian-lts@lists.debian.org
  https://www.debian.org/lts/security/
August 11, 2020   https://wiki.debian.org/LTS
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Package : roundcube
Version : 1.2.3+dfsg.1-4+deb9u7
CVE ID : CVE-2020-16145
Debian Bug : 968216

A vulnerability was discovered in roundcube, a skinnable AJAX based
webmail solution for IMAP servers. HTML messages with malicious svg or
math content can exploit a Cross-site scripting (XSS) vulnerability.

For Debian 9 stretch, this problem has been fixed in version
1.2.3+dfsg.1-4+deb9u7.

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