Arbitrary Code Injection Affecting freecad package, versions <0.20.2+dfsg1-4+deb12u1
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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Test your applications- Snyk IDSNYK-ECHOLATEST-FREECAD-19012614
- published20 Aug 2026
- disclosed17 Aug 2026
Introduced: 17 Aug 2026
CVE-2026-34789 (opens in a new tab)How to fix?
Upgrade Echo:latest freecad to version 0.20.2+dfsg1-4+deb12u1 or higher.
NVD Description
Note: Versions mentioned in the description apply only to the upstream freecad package and not the freecad package as distributed by Echo.
See How to fix? for Echo:latest relevant fixed versions and status.
FreeCAD is a free and open-source multiplatform 3D parametric modeler. Prior to 1.1.2, src/App/PropertyPythonObject.cpp in PropertyPythonObject::Restore() passes the attacker-controlled module attribute from serialized PropertyPythonObject XML directly to PyImport_ImportModule() while restoring a crafted FCStd document, which executes module-level Python code, and the legacy pickle branch also imports an attacker-controlled module and invokes its class constructor through PyObject_CallObject(). This issue is fixed in version 1.1.2.
References
- https://advisory.echohq.com/cve/CVE-2026-34789
- https://github.com/FreeCAD/FreeCAD/commit/81b73925ce22610542367301d8eff4259eb9596e
- https://github.com/FreeCAD/FreeCAD/commit/983037f3003dc31f48db36705b86fb3fbe026295
- https://github.com/FreeCAD/FreeCAD/commit/e2dc6c8172673642c6856b8b3a5a6accefb18279
- https://github.com/FreeCAD/FreeCAD/releases/tag/1.1.2
- https://github.com/FreeCAD/FreeCAD/security/advisories/GHSA-493w-pp4h-h77v