CVE-2026-34789CWE-94code-injection

CVE-2026-34789

High · published August 18, 2026

CVSS v3.1
7.0
EPSS
0%
Percentile
8.8
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v3.1
7.0 · HIGH
Vector
CVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H
CVSS v4.0
Not supplied
EPSS
0.00196 · 8.8th percentile
Weakness
CWE-94 · Improper Control of Generation of Code ('Code Injection')
Published
2026-08-18T01:16Z
References (6)
https://github.com/FreeCAD/FreeCAD/commit/81b73925ce22610542367301d8eff4259eb9596e · [email protected]https://github.com/FreeCAD/FreeCAD/commit/983037f3003dc31f48db36705b86fb3fbe026295 · [email protected]https://github.com/FreeCAD/FreeCAD/commit/e2dc6c8172673642c6856b8b3a5a6accefb18279 · [email protected]https://github.com/FreeCAD/FreeCAD/releases/tag/1.1.2 · [email protected]https://github.com/FreeCAD/FreeCAD/security/advisories/GHSA-493w-pp4h-h77v · [email protected]https://github.com/FreeCAD/FreeCAD/security/advisories/GHSA-493w-pp4h-h77v · 134c704f-9b21-4f2e-91b3-4a467353bcc0
EPSS history
Timeline
  • 17 AUG 20:47Z
    FreeCAD: Arbitrary code execution via unsandboxed PyImport_ImportModule in PropertyPythonObject::Restore
    cvelistv5