CVE-2026-73235 FreeCAD: XXE file read and SSRF via external entity injection in Document.xml SAX parser

FreeCAD is a free and open-source multiplatform 3D parametric modeler. Prior to 1.1.2, the Xerces SAX2 XMLReader constructed in src/Base/Reader.cpp by Base::XMLReader::XMLReader parses attacker-controlled Document.xml from a crafted .FCStd archive without disabling default external entity...