Several vulnerabilities have been discovered in the PostgreSQL database system.
For Debian 10 buster, these problems have been fixed in version 11.22-0+deb10u1.
We recommend that you upgrade your postgresql-11 packages.
For the detailed security status of postgresql-11 please refer to its security tracker page at: https://security-tracker.debian.org/tracker/postgresql-11
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