metadata
license: mit
tags:
- security-research
- modelscan-bypass
modelscan-bypass-tokenize-open
Security Research — Modelscan Bypass PoC
Severity: HIGH
Module: tokenize
Description: File open via tokenize.open() — bypasses builtins.open block
Impact: Opens any file for reading. Alternative to builtins.open which is blocked.
Modelscan Result
$ modelscan scan -p pytorch_model.bin
No issues found! ✅ (FALSE NEGATIVE)
Tested against: modelscan 0.8.8 (latest)
How It Works
The pickle file uses tokenize which is NOT in modelscan's unsafe_globals blocklist.
When loaded via torch.load() or pickle.loads(), it executes the payload.
Responsible Disclosure
This PoC is part of responsible security research submitted via Huntr MFV program to help ProtectAI improve modelscan's detection capabilities.