WebLogic Vulnerability - CVE-2021-21350

XStream is a Java library to serialize objects to XML and back again. In XStream before version 1.4.16 there is a vulnerability which may allow a remote attacker to execute arbitrary code only by manipulating the processed input stream. No user is affected who followed the recommendation to setup XStream39s security framework with a whitelist limited to the minimal required types. If you rely on XStream39s default blacklist of the Security Framework you will have to use at least version 1.4.16.