XStream is software for serializing Java objects to XML and back again. A
vulnerability in XStream versions prior to 1.4.17 may allow a remote
attacker has sufficient rights to execute commands of the host only by
manipulating the processed input stream. No user who followed the
recommendation to setup XStream's security framework with a whitelist
limited to the minimal required types is affected. The vulnerability is
patched in version 1.4.17.