Two important bugs were discovered in xapian-core, a search engine library, that led to potential database corruption on disk full, and incorrectly reporting corruption for a database with replication changesets.
For Debian 10 buster, this problem has been fixed in version 1.4.11-1+deb10u1.
We recommend that you upgrade your xapian-core packages.
For the detailed security status of xapian-core please refer to its security tracker page at: https://security-tracker.debian.org/tracker/xapian-core
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