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FreePlane <= 1.5.9 XXE

What FreePlane is? FreePlane is an open-source application intended for creating mind maps. Vulnerability descripton: FreePlane is a Java-based app that loads its mind maps that are stored as simple XML files. The parser allowed to expand external entities that caused this vulnerability. Results: When the victim opens a maliciously crafted mind map, any accessible by Java file can be sent to the attacker. Proof of concept: Malicious mindmap: