A security issue was discovered in pcs, a corosync and pacemaker configuration tool:
For Debian 10 buster, this problem has been fixed in version 0.10.1-2+deb10u1.
We recommend that you upgrade your pcs packages.
For the detailed security status of pcs please refer to its security tracker page at: https://security-tracker.debian.org/tracker/pcs
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