An untrusted deserialization was found in the org.apache.xmlrpc.parser.XmlRpcResponseParser:addResult method of Apache XML-RPC (aka ws-xmlrpc) library. A malicious XML-RPC server could target a XML-RPC client causing it to execute arbitrary code. Apache XML-RPC is no longer maintained and this issue will not be fixed.
https://www.debian.org/security/2020/dsa-4619
https://usn.ubuntu.com/4496-1/
https://security.gentoo.org/glsa/202401-26
https://seclists.org/bugtraq/2020/Feb/8
https://lists.debian.org/debian-lts-announce/2020/01/msg00033.html
https://github.com/orangecertcc/security-research/security/advisories/GHSA-x2r6-4m45-m4jp
https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2019-17570%3B