Several vulnerabilities were fixed in JRuby, a Java implementation of the Ruby programming language.
For Debian 10 buster, these problems have been fixed in version 184.108.40.206-3+deb10u1.
We recommend that you upgrade your jruby packages.
For the detailed security status of jruby please refer to its security tracker page at: https://security-tracker.debian.org/tracker/jruby
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