Apache XML-RPC is a Java implementation of XML-RPC, a popular protocol that uses XML over HTTP to implement remote procedure calls. Apache XML-RPC was previously known as Helma XML-RPC. If you have code using the Helma library, all you should have to do is change the import statements in your code from helma.xmlrpc.* to org.apache.xmlrpc.*.
Security Fix(es):
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 Apache XML-RPC is no longer maintained and this issue will not be fixed.(CVE-2019-17570)
{
"severity": "Critical"
}