CVE-2026-73235

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 resolution or external DTD loading. When Document::restore() opens the document, external entities can read local files through the file URI scheme or initiate server-side requests through the http URI scheme, and resolved content can flow through the characters() callback. This issue is fixed in version 1.1.2.

• CWE-611

• https://github.com/FreeCAD/FreeCAD/commit/7d1b8f5806db578db99feb348e55a6b0eaff7c73
• https://github.com/FreeCAD/FreeCAD/commit/d98eaf1f194400d8a8886fe6780c54f5c68ea2c3
• https://github.com/FreeCAD/FreeCAD/pull/31271
• https://github.com/FreeCAD/FreeCAD/pull/31280
• https://github.com/FreeCAD/FreeCAD/releases/tag/1.1.2
• https://github.com/FreeCAD/FreeCAD/security/advisories/GHSA-cp6c-87x9-xf49

Published

Aug 11, 2026

Last Modified

Aug 11, 2026

Status

Received

• How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
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