---
tags:
- security
- huntr
- modelscan
- model-file-vulnerability
---

# F-MFV-004: ModelScan misses NumPy ctypeslib.load_library native-code load

This repository contains a gated proof-of-concept model artifact for a Huntr Model File Vulnerability submission.

Warning: do not load this artifact outside an isolated test environment. The payload is intentionally harmless and writes only local marker files during controlled reproduction, but it demonstrates a model-load execution path.

## Target

- Finding: `F-MFV-004`
- Target: Joblib / ModelScan
- Scanner: ModelScan `0.8.8`

## Summary

The Joblib artifact embeds a harmless shared library and loads it through numpy.ctypeslib.load_library during model load while ModelScan 0.8.8 reports zero issues.

## Files

- `numpy_ctypeslib.joblib`
  - SHA256: `3a36a1f4752474633f3ef0d203c2b64e28b8500dfe5a0583b0bb69af868ead2b`

## Access

This public repository is gated with manual access review for Huntr MFV triage. `protectai-bot` has been granted access.