CVE-2021-39140: Deserialization of Untrusted Data

XStream is a simple library to serialize objects to XML and back again. This vulnerability may allow a remote attacker to allocate % CPU time on the target system depending on CPU type or parallel execution of such a payload resulting in a denial of service only by manipulating the processed input stream. Users who followed the recommendation to setup XStream’s security framework with an allow list limited to the minimal required types are not impacted.