---
id: CVE-2026-73235
title: FreeCAD is a free and open-source multiplatform 3D parametric modeler
summary: >-
  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 .F…
severity: medium
cvss: 6.1
cvssVector: 'CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:L/A:N'
cwe:
  - CWE-611
published: '2026-08-11'
updated: '2026-09-09'
sourceUpdated: '2026-09-09T20:50:00.950'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-73235'
references:
  - url: >-
      https://github.com/FreeCAD/FreeCAD/commit/7d1b8f5806db578db99feb348e55a6b0eaff7c73
    label: security-advisories@github.com
  - url: >-
      https://github.com/FreeCAD/FreeCAD/commit/d98eaf1f194400d8a8886fe6780c54f5c68ea2c3
    label: security-advisories@github.com
  - url: 'https://github.com/FreeCAD/FreeCAD/pull/31271'
    label: security-advisories@github.com
  - url: 'https://github.com/FreeCAD/FreeCAD/pull/31280'
    label: security-advisories@github.com
  - url: 'https://github.com/FreeCAD/FreeCAD/releases/tag/1.1.2'
    label: security-advisories@github.com
  - url: 'https://github.com/FreeCAD/FreeCAD/security/advisories/GHSA-cp6c-87x9-xf49'
    label: security-advisories@github.com
tags:
  - nvd
epss: 0.00124
epssPercentile: 0.02446
ingestedAt: '2026-09-09T21:22:45.529Z'
---

## Overview

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.

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.