CVE-2021-32754: Improper Restriction of XML External Entity Reference

FlowDroid is a data flow analysis tool. FlowDroid contained an XML external entity (XXE) vulnerability that allowed an attacker who had control over the source/sink definition file in XML format to read files from external locations. In order for this to occur, the XML-based format for sources and sinks had to be used and the attacker had to able control the source/sink definition file.