A phpmyadmin security update has been released for Debian GNU/Linux 8 LTS.

Package : phpmyadmin
Version : 4:4.2.12-2+deb8u8
CVE ID : CVE-2020-5504
Debian Bug : 948718

In phpMyAdmin 4 before 4.9.4 and 5 before 5.0.1, SQL injection exists in the
user accounts page. A malicious user could inject custom SQL in place of their
own username when creating queries to this page. An attacker must have a valid
MySQL account to access the server.

For Debian 8 "Jessie", this problem has been fixed in version
4:4.2.12-2+deb8u8.

We recommend that you upgrade your phpmyadmin 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