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

CVE-2026-34398 is fixed in 2 products on 2 platforms, first by FreeCAD 1.1.1, released April 14, 2026. It is not reported as exploited. Patch Radar priority: High.

- Web page: https://patchblox.com/security/cve/CVE-2026-34398
- Priority: High
- CVSS: 7.8 (high)
- EPSS: 0.0022
- CISA KEV: not listed
- Exploited (vendor report): no
- Publicly disclosed: no
- Published: Aug 17, 2026
- Weakness: CWE-95: Improper Neutralization of Directives in Dynamically Evaluated Code ('Eval Injection')
- Vendor advisory: https://nvd.nist.gov/vuln/detail/CVE-2026-34398

## 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.

## Where it's fixed

| Platform | Product | Fixed in | Fix | Released |
|---|---|---|---|---|
| Windows apps | FreeCAD | 1.1.1 | [FreeCAD 1.1.1](https://patchblox.com/security/data/fix/windows-app/freecad.freecad-1.1.1.md) | Apr 14, 2026 |
| Linux | freecad Debian 13.5 (trixie) | 1.0.0+dfsg-8+deb13u3 | [DEBIAN-CVE-2026-34398](https://patchblox.com/security/data/fix/linux/debian-cve-2026-34398.md) | Aug 27, 2026 |
| Linux | freecad Debian 14 | 1.1.1+dfsg-1 | [DEBIAN-CVE-2026-34398](https://patchblox.com/security/data/fix/linux/debian-cve-2026-34398.md) | Aug 27, 2026 |

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Data as of 2026-11-08T13:06:02Z UTC. Source: Patchblox Patch Radar (https://patchblox.com/security/patch-radar). Patchblox finds out-of-date software on Windows, macOS and Linux and updates it through release rings: https://patchblox.com/demo

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