In Apache Hadoop 2.6.x before 2.6.5 and 2.7.x before 2.7.3, a remote user who can authenticate with the HDFS NameNode can possibly run arbitrary commands with the same privileges as the HDFS service.
https://github.com/advisories/GHSA-7q56-mp4c-gggg
https://euvd.enisa.europa.eu/vulnerability/EUVD-2022-3045