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.
CSIRTS triage
- What
- FreeCAD contains multiple vulnerabilities allowing arbitrary code execution, local file disclosure, and requests to arbitrary hosts when processing crafted FCStd documents or templates.
- Who is affected
- Systems running FreeCAD and processing untrusted FCStd documents or templates are affected.
- Urgency
- High urgency; arbitrary code execution and file disclosure are possible from crafted documents.
- Action
- Apply Debian security update DSA-6467-1 for FreeCAD.
AI-assisted analysis generated from the source advisory — verify against the original.
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Exploitation outlook
- Low exploitation risk0.12% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 2% of all EPSS-scored CVEs.
Advisory coverage (2)
- unknownDSA-6467-1 freecad - security updatedebian · 2026-08-26
- mediumCVE-2026-73235: FreeCAD is a free and open-source multiplatform 3D parametric modeler. Prior to 1.1.2, the Xer…nvd · 2026-08-11
External references
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