common/InputStreamHelper.java in Packwood MPXJ before 8.3.5 allows directory traversal in the zip stream handler flow, leading to the writing of files to arbitrary locations.
https://www.oracle.com/security-alerts/cpujan2021.html
https://github.com/joniles/mpxj/commit/8eaf4225048ea5ba7e59ef4556dab2098fcc4a1d