What’s Vulnerable › Vulnerabilities

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

• Severity: medium (CVSS 6.1 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.1% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-08-11 · updated 2026-09-09
• Weakness: CWE-611

Description

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.

Affected products

• FreeCAD: before 1.1.2

References

• 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

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