A postgresql-9.4 security update has been released for Debian GNU/Linux 8 LTS to fix an issue where the PostgreSQL database did not perform authorization checks.

Package : postgresql-9.4
Version : 9.4.26-0+deb8u1
CVE ID : CVE-2020-1720

Tom Lane discovered that "ALTER ... DEPENDS ON EXTENSION" sub commands
in the PostgreSQL database did not perform authorisation checks.

For Debian 8 "Jessie", this problem has been fixed in version
9.4.26-0+deb8u1.

We recommend that you upgrade your postgresql-9.4_9.4.26-0+deb8u1 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