Kylin can receive user input and load any class through Class.forName(...). This issue affects Apache Kylin 2 version 2.6.6 and prior versions; Apache Kylin 3 version 3.1.2 and prior versions; Apache Kylin 4 version 4.0.0 and prior versions.
https://github.com/advisories/GHSA-q656-g2x3-8cgh
https://lists.apache.org/thread/hh5crx3yr701zd8wtpqo1mww2rlkvznw