CVE-2026-34398

FreeCAD: Arbitrary Code Execution via eval() on untrusted project file metadata in BIM Workbench

7.8 HighFix available

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.

Attack profile

How easy it is to exploit

Attack vector: Local
Complexity: Low
Privileges needed: None
User interaction: Required

What an attacker can affect

Confidentiality: High
Integrity: High
Availability: High

Exploit likelihood

0.22%Up 0.1 points since Aug 18, 2026

What each source reports

CVE List Score used 7.8

FreeCAD: Arbitrary Code Execution via eval() on untrusted project file metadata in BIM Workbench

Record: CVE-2026-34398
CVSS 3.1: 7.8 HighCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Weakness: CWE-95
Updated: 2026-11-02

EUVDEUVD-2026-60457 7.8

Record: EUVD-2026-60457
CVSS 3.1: 7.8 HighCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Updated: 2026-11-02

NVD 7.8

Record: CVE-2026-34398
CVSS 3.1: 7.8 HighCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Weakness: CWE-95
Updated: 2026-11-02

OSV 7.8

FreeCAD: Arbitrary Code Execution via eval() on untrusted project file metadata in BIM Workbench

Record: CVE-2026-34398
CVSS 3.1: 7.8 HighCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Weakness: CWE-95
Updated: 2026-11-02

OSVDEBIAN-CVE-2026-34398 7.8

Record: DEBIAN-CVE-2026-34398
CVSS 3.1: 7.8 HighCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Updated: 2026-11-02

OSVUBUNTU-CVE-2026-34398 7.8

Record: UBUNTU-CVE-2026-34398
CVSS 3.1: 7.8 HighCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Updated: 2026-11-02

Affected products

freecad

Affected packages

Affected packages
Package	Affected	Fixed
`freecad` Debian:13	before 1.0.0+dfsg-8+deb13u3, plus listed versions 1.0.0+dfsg-81.0.0+dfsg-8+deb13u11.0.0+dfsg-8+deb13u2	1.0.0+dfsg-8+deb13u3
`freecad` Debian:14	before 1.1.1+dfsg-1, plus listed versions 1.0.0+dfsg-81.0.2+dfsg-11.0.2+dfsg-21.0.2+dfsg-31.0.2+dfsg-4 Show 7 moreShow less 1.0.2+dfsg-51.0.2+dfsg-61.0.2+dfsg-71.0.2+dfsg-8~exp11.1.0+dfsg-11.1.0+dfsg-21.1.0+dfsg-2~exp1	1.1.1+dfsg-1
`freecad` Ubuntu:16.04:LTS	All versions, plus listed versions 0.14.3702+dfsg-40.15.4671+dfsg1-10.15.4671+dfsg1-20.15.4671+dfsg1-30.15.4671+dfsg1-4	None known
`freecad` Ubuntu:18.04:LTS	All versions, plus listed versions 0.16+dfsg2-30.16+dfsg2-3build30.16.6712+dfsg1-10.16.6712+dfsg1-1ubuntu10.16.6712+dfsg1-1ubuntu2	None known
`freecad` Ubuntu:20.04:LTS	All versions, plus listed versions 0.18.3+dfsg1-10.18.3+dfsg1-40.18.4+dfsg1-10.18.4+dfsg1-2~build10.18.4+dfsg1-2 Show 4 moreShow less 0.18.4+dfsg1-2ubuntu80.18.4+dfsg2-1ubuntu10.18.4+dfsg2-1ubuntu20.18.4+dfsg2-1ubuntu4	None known
`freecad` Ubuntu:22.04:LTS	All versions, plus listed versions 0.19.1+dfsg1-20.19.2+dfsg1-30.19.2+dfsg1-3ubuntu1	None known
`freecad` Ubuntu:26.10	All versions, plus listed versions 1.1.1+dfsg-31.1.1+dfsg-3build11.1.3+dfsg-3build1	None known

History

History
Recorded	Changed	Sources
Nov 2, 2026	first indexed	CVE List, EUVD, NVD, OSV

Dates are when Every CVE recorded each change. Upstream dates may differ.

In short

CVE-2026-34398 is a high vulnerability (CVSS 7.8) in Freecad, published August 17, 2026. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.22%, the 13th percentile. Fixed in freecad 1.0.0+dfsg-8+deb13u3.

References

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