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

CVE-2026-73235 is fixed in 2 products on 2 platforms, first by FreeCAD 1.1.2, released July 23, 2026. It is not reported as exploited. Patch Radar priority: Routine.

- Web page: https://patchblox.com/security/cve/CVE-2026-73235
- Priority: Routine
- CVSS: 6.1 (medium)
- EPSS: 0.0012
- CISA KEV: not listed
- Exploited (vendor report): no
- Publicly disclosed: no
- Published: Aug 11, 2026
- Weakness: CWE-611: Improper Restriction of XML External Entity Reference
- Vendor advisory: https://nvd.nist.gov/vuln/detail/CVE-2026-73235

## 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.

## Where it's fixed

| Platform | Product | Fixed in | Fix | Released |
|---|---|---|---|---|
| Windows apps | FreeCAD | 1.1.2 | [FreeCAD 1.1.2](https://patchblox.com/security/data/fix/windows-app/freecad.freecad-1.1.2.md) | Jul 23, 2026 |
| Linux | freecad Debian 12.15 (bookworm) | 0.20.2+dfsg1-4+deb12u1 | [DEBIAN-CVE-2026-73235](https://patchblox.com/security/data/fix/linux/debian-cve-2026-73235.md) | Aug 27, 2026 |
| Linux | freecad Debian 13.5 (trixie) | 1.0.0+dfsg-8+deb13u3 | [DEBIAN-CVE-2026-73235](https://patchblox.com/security/data/fix/linux/debian-cve-2026-73235.md) | Aug 27, 2026 |
| Linux | freecad Debian 14 | 1.1.3+dfsg-1 | [DEBIAN-CVE-2026-73235](https://patchblox.com/security/data/fix/linux/debian-cve-2026-73235.md) | Aug 27, 2026 |

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Data as of 2026-11-08T13:06:02Z UTC. Source: Patchblox Patch Radar (https://patchblox.com/security/patch-radar). Patchblox finds out-of-date software on Windows, macOS and Linux and updates it through release rings: https://patchblox.com/demo

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