A dom4j security update has been released for Debian GNU/Linux 8 LTS to address a flaw was found in dom4j library.

DLA 2191-1: dom4j security update

Package : dom4j
Version : 1.6.1+dfsg.3-2+deb8u2
CVE ID : CVE-2020-10683
Debian Bug : 958055

A flaw was found in dom4j library. By using the default
SaxReader() provided by Dom4J, external DTDs and External
Entities are allowed, resulting in a possible XXE.

For Debian 8 "Jessie", this problem has been fixed in version
1.6.1+dfsg.3-2+deb8u2.

We recommend that you upgrade your dom4j 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