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

> Authenticated users can exploit path traversal in file renaming to move or write files outside the intended directory in Manyfold.

- **Severity:** High 7.1 (`CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:L`)
- **Exploited in the wild:** Not known
- **Login needed:** Any signed-in user
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 16 Jul 2026
- **Updated:** 18 Jul 2026
- **Also known as:** GHSA-j5f9-r7wf-hv37

## What is CVE-2026-46336?

CVE-2026-46336 is a high-severity path traversal vulnerability in manyfold3d manyfold, published on 16 Jul 2026. Any signed-in user can exploit it over the network, with no action from the victim.

### Official 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.

Weakness: CWE-73 (External Control of File Name or Path), CWE-22 (Improper Limitation of a Pathname to a Restricted Directory)

## Which versions are affected by CVE-2026-46336?


## How do I fix CVE-2026-46336?

No fix has been published for CVE-2026-46336 yet. Limit exposure of the affected software until one is available.

## Is CVE-2026-46336 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-46336 exists.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-46336 and fix it if it is affected.

What it is: CVE-2026-46336 is a high-severity path traversal vulnerability in manyfold3d manyfold, published on 16 Jul 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Exploitation: It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-46336 exists.

Affected product: manyfold3d manyfold. No package-level version data is available, so check the vendor advisory linked from the reference page.

Task:
1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.
2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.
3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.
4. Run the tests and summarise what changed and why.
5. If nothing in the project is affected, say so and change nothing.

Reference: https://insights.sbomify.com/CVE-2026-46336/ (Markdown: https://insights.sbomify.com/CVE-2026-46336/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-46336
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-46336
- OSV: https://osv.dev/vulnerability/CVE-2026-46336

---
From sbomify Insights: https://insights.sbomify.com/CVE-2026-46336/
Summaries are generated and may contain mistakes; the official description above is the record.