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CVE-2026-73233— FreeCAD: FEM formula incomplete escape

Quick assessment

Affected
FreeCAD FreeCAD
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

FreeCAD是FreeCAD组织的一款参数化三维计算机辅助设计软件。 FreeCAD 1.1.2之前版本存在代码注入漏洞，该漏洞源于src/Mod/Fem/Gui/TaskFemConstraintDisplacement.cpp中的FEM Displacement Constraint任务对话框在传递xDisplacementFormula、yDisplacementFormula和zDisplacementFormula字段时，转义助手仅中和引号而未处理反斜杠，导致特制公式文本可终止生成的Pytho

CVSS 8.5 · High EPSS 0.15% · P4

Possible ATT&CK Techniques 1 AI

T1059 · Command and Scripting Interpreter

Affected Version Matrix 1

VendorProduct Version RangeStatus
FreeCAD FreeCAD < 1.1.2 affected
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I. Basic Information for CVE-2026-73233

Vulnerability Information
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Vulnerability Title
FreeCAD: FEM formula incomplete escape
Source: CVE Program / CVE List V5
Vulnerability Description
FreeCAD is a free and open-source multiplatform 3D parametric modeler. Prior to 1.1.2, the FEM Displacement Constraint task dialog in src/Mod/Fem/Gui/TaskFemConstraintDisplacement.cpp passes the xDisplacementFormula, yDisplacementFormula, and zDisplacementFormula fields of a Fem::ConstraintDisplacement object through TaskDlgFemConstraintDisplacement::accept() into Gui::Command::doCommand. The escaping helper neutralizes quotation marks but not backslashes, allowing crafted formula text to terminate the generated Python string and execute arbitrary Python code with the FreeCAD process's privileges when a victim accepts the dialog. This issue is fixed in version 1.1.2.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
Source: CVE Program / CVE List V5
Vulnerability Type
对生成代码的控制不恰当(代码注入)
Source: CVE Program / CVE List V5
Vulnerability Title
FreeCAD 代码注入漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
FreeCAD是FreeCAD组织的一款参数化三维计算机辅助设计软件。 FreeCAD 1.1.2之前版本存在代码注入漏洞，该漏洞源于src/Mod/Fem/Gui/TaskFemConstraintDisplacement.cpp中的FEM Displacement Constraint任务对话框在传递xDisplacementFormula、yDisplacementFormula和zDisplacementFormula字段时，转义助手仅中和引号而未处理反斜杠，导致特制公式文本可终止生成的Pytho
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
FreeCAD FreeCAD < 1.1.2 -

II. Public POCs for CVE-2026-73233

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III. Intelligence Information for CVE-2026-73233

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Patches & Fixes for CVE-2026-73233 (4)

Vendor Advisories for CVE-2026-73233 (1)

Vendor Pages for CVE-2026-73233 (1)

Same Patch Batch · FreeCAD · 2026-08-11 · 3 CVEs total

CVE-2026-73234 7.8 HIGH FreeCAD: FCStd path traversal allows arbitrary file write via unsanitized file attribute i
CVE-2026-73235 6.1 MEDIUM FreeCAD: XXE file read and SSRF via external entity injection in Document.xml SAX parser

IV. Related Vulnerabilities

Same product: FreeCAD
Same vendor: FreeCAD
Same weakness: CWE-94

V. Comments for CVE-2026-73233

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