A php-horde security update has been released for Debian GNU/Linux 8 LTS to address a stored Cross-Site Scripting (XSS) vulnerability via an SVG image upload containing a JavaScript payload.

DLA 2230-1: php-horde security update

Package : php-horde
Version : 5.2.1+debian0-2+deb8u6
CVE ID : CVE-2020-8035

The image view functionality in Horde Groupware Webmail Edition was
affected by a stored Cross-Site Scripting (XSS) vulnerability via an SVG
image upload containing a JavaScript payload. An attacker could have
obtained access to a victim's webmail account by making them visit a
malicious URL.

For Debian 8 "Jessie", this problem has been fixed in version
5.2.1+debian0-2+deb8u6.

We recommend that you upgrade your php-horde packages.

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