A mcabber security update has been released for Debian GNU/Linux 8 LTS to address a "roster push attack" in mcabber.

DLA 2260-1: mcabber security update

Package : mcabber
Version : 0.10.2-1+deb8u1
CVE ID : CVE-2016-9928

It was discovered that there was a "roster push attack" in mcabber, a
console-based Jabber (XMPP) client. This is identical to CVE-2015-8688
for gajim.

For Debian 8 "Jessie", this problem has been fixed in version
0.10.2-1+deb8u1.

We recommend that you upgrade your mcabber 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