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CVE-2026-34398— FreeCAD: Arbitrary Code Execution via eval() on untrusted project file metadata in BIM Workbench

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 0.19至1.1.1之前版本存在代码注入漏洞，该漏洞源于BIM Project Manager Load Template流程中的src/Mod/BIM/bimcommands/BimProjectManager.py文件将攻击者控制的FCStd Meta属性值wpposition、wpu、wpv和wpaxis直接传递给eval()函数，可能导致任意Python代码执行。

CVSS 7.8 · High EPSS 0.22% · P12

Affected Version Matrix 1

VendorProduct Version RangeStatus
FreeCAD FreeCAD >= 0.19, < 1.1.1 affected
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I. Basic Information for CVE-2026-34398

Vulnerability Information
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Vulnerability Title
FreeCAD: Arbitrary Code Execution via eval() on untrusted project file metadata in BIM Workbench
Source: CVE Program / CVE List V5
Vulnerability Description
FreeCAD is a free and open-source multiplatform 3D parametric modeler. From 0.19 until 1.1.1, src/Mod/BIM/bimcommands/BimProjectManager.py in the BIM Project Manager Load Template flow passes attacker-controlled FCStd Meta property values for wpposition, wpu, wpv, and wpaxis directly to eval(), allowing arbitrary Python code execution when a user loads a malicious BIM project template. This issue is fixed in version 1.1.1.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
动态执行代码中指令转义处理不恰当(Eval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 0.19至1.1.1之前版本存在代码注入漏洞，该漏洞源于BIM Project Manager Load Template流程中的src/Mod/BIM/bimcommands/BimProjectManager.py文件将攻击者控制的FCStd Meta属性值wpposition、wpu、wpv和wpaxis直接传递给eval()函数，可能导致任意Python代码执行。
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 >= 0.19, < 1.1.1 -

II. Public POCs for CVE-2026-34398

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III. Intelligence Information for CVE-2026-34398

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Patches & Fixes for CVE-2026-34398 (3)

Vendor Advisories for CVE-2026-34398 (1)

Vendor Pages for CVE-2026-34398 (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-2026-34789 7.0 HIGH FreeCAD: Arbitrary code execution via unsandboxed PyImport_ImportModule in PropertyPythonO

IV. Related Vulnerabilities

Same product: FreeCAD
Same vendor: FreeCAD
Same weakness: CWE-95