Debian: DSA-5623-1 Urgent MySQL 8.0 Security Flaw in User Authentication

It was discovered that a late privilege drop in the "REFRESH MATERIALIZED
VIEW CONCURRENTLY" command could allow an attacker to trick a user with
higher privileges to run SQL commands with these permissions.

For the oldstable distribution (bullseye), this problem has been fixed
in version 13.14-0+deb11u1.

We recommend that you upgrade your postgresql-13 packages.

For the detailed security status of postgresql-13 please refer to
its security tracker page at:
https://security-tracker.debian.org/tracker/source-package/postgresql-13

Further information about Debian Security Advisories, how to apply
these updates to your system and frequently asked questions can be
found at: https://www.debian.org/security/