CVE-2026-34399: FreeCAD: Arbitrary Code Execution via eval() on untrusted SVG template scale field in BIM TechDraw Page

Severity: high (CVSS 7.8 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.2% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2026-08-17 · updated 2026-09-09
Weakness: CWE-95

Description

FreeCAD is a free and open-source multiplatform 3D parametric modeler. From 0.19 until 1.1.1, FreeCAD's BIM Workbench contains an eval() call on untrusted data from SVG template files. When a user creates a TechDraw page from a malicious SVG template, arbitrary Python code executes. The vulnerable code is in src/Mod/BIM/bimcommands/BimTDPage.py (line 87). This issue is fixed in version 1.1.1.

Affected products

FreeCAD: from 0.19, < 1.1.1

References

https://github.com/FreeCAD/FreeCAD/releases/tag/1.1.1
https://github.com/FreeCAD/FreeCAD/security/advisories/GHSA-chv4-vm6r-wjqj

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