Vulnerability · Published Aug 17, 2026 · Assigned by GitHub_M

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

High 7.8

In plain English

A high-severity security flaw in FreeCAD from FreeCAD. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.2% (higher than 10% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.

Severity (CVSS 3.1)7.8High

Exploit odds (30 days)0.2%top 90.4% of all CVEs

Exploited in the wildNo reportsCISA SSVC: none

Attack toolingNoneno public tooling known

Official 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 packages & fixed versions

Ecosystem	Package	Fixed in	Advisory
Debian:13	freecad	1.0.0+dfsg-8+deb13u3	DEBIAN-CVE-2026-34399
Debian:14	freecad	1.1.1+dfsg-1	DEBIAN-CVE-2026-34399
Ubuntu:22.04:LTS	freecad	no fix listed	UBUNTU-CVE-2026-34399
Ubuntu:26.10	freecad	no fix listed	UBUNTU-CVE-2026-34399

Affected products (as reported)

Vendor	Product	Versions
FreeCAD	FreeCAD	>= 0.19, < 1.1.1

Weakness: CWE-95 · Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

References

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