High [CVE-2026-34398] Arbitrary Code Execution via malicious BIM project template
This high-severity Red Hat Linux advisory covers CVE-2026-34398.
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Summary
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.
The BIM Project Manager's Load Template function does not properly validate certain properties within a project template. When a user opens this malicious template, the embedded code can be executed, potentially leading to arbitrary code execution on the user's system.
This is an Important flaw in FreeCAD where loading a specially crafted BIM project template can lead to arbitrary code execution. The vulnerability requires user interaction to open a malicious file, but successful exploitation grants an attacker full control over the user's system, justifying its Important severity.
Red Hat severity: Important — CVSS 7.8 (CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H). Weakness: CWE-94.
Affected versions
No affected-version range was extracted from the source record. The vendor advisory is authoritative — check it before change work.
Official advisory · high-confidence parse· fetched 23 days ago·verify at source
Mitigation
Upgrade to a fixed release: 1.1.1. That is the remediation for this advisory.
The vendor advisory may list additional interim mitigations or workarounds not captured here — review it before change work.
Official advisory · high-confidence parse· fetched 23 days ago·verify at source
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