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CVE-2026-34789— FreeCAD: Arbitrary code execution via unsandboxed PyImport_ImportModule in PropertyPythonObject::Restore

Quick assessment

Affected
FreeCAD FreeCAD
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

FreeCAD是FreeCAD组织的一款三维参数化计算机辅助设计软件。 FreeCAD 1.1.2之前版本存在代码注入漏洞，该漏洞源于PropertyPythonObject::Restore()函数将攻击者控制的模块属性直接传递给PyImport_ImportModule()，并在恢复特制FCStd文档时执行模块级Python代码，可能导致代码注入。

CVSS 7.0 · High EPSS 0.14% · P4

Affected Version Matrix 1

VendorProduct Version RangeStatus
FreeCAD FreeCAD < 1.1.2 affected
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I. Basic Information for CVE-2026-34789

Vulnerability Information
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Vulnerability Title
FreeCAD: Arbitrary code execution via unsandboxed PyImport_ImportModule in PropertyPythonObject::Restore
Source: CVE Program / CVE List V5
Vulnerability Description
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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
对生成代码的控制不恰当(代码注入)
Source: CVE Program / CVE List V5
Vulnerability Title
FreeCAD 代码注入漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
FreeCAD是FreeCAD组织的一款三维参数化计算机辅助设计软件。 FreeCAD 1.1.2之前版本存在代码注入漏洞，该漏洞源于PropertyPythonObject::Restore()函数将攻击者控制的模块属性直接传递给PyImport_ImportModule()，并在恢复特制FCStd文档时执行模块级Python代码，可能导致代码注入。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
FreeCAD FreeCAD < 1.1.2 -

II. Public POCs for CVE-2026-34789

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III. Intelligence Information for CVE-2026-34789

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Patches & Fixes for CVE-2026-34789 (3)

Vendor Advisories for CVE-2026-34789 (1)

Vendor Pages for CVE-2026-34789 (1)

Same Patch Batch · FreeCAD · 2026-08-17 · 3 CVEs total

CVE-2026-34399 7.8 HIGH FreeCAD: Arbitrary Code Execution via eval() on untrusted SVG template scale field in BIM
CVE-2026-34398 7.8 HIGH FreeCAD: Arbitrary Code Execution via eval() on untrusted project file metadata in BIM Wor

IV. Related Vulnerabilities

Same product: FreeCAD
Same vendor: FreeCAD
Same weakness: CWE-94

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