There is a race condition in OozieSharelibCLI in Apache Oozie before version 5.2.1 which allows a malicious attacker to replace the files in Oozie's sharelib during it's creation.

Vulnerability allows a user of Apache Oozie 3.1.3-incubating to 5.0.0 to impersonate other users. The malicious user can construct an XML that results workflows running in other user's name.

Vulnerability allows a user of Apache Oozie 3.1.3-incubating to 4.3.0 and 5.0.0-beta1 to expose private files on the Oozie server process. The malicious user can construct a workflow XML file containing XML directives and configuration that reference sensitive files on the Oozie server host.