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manja316/
modelscan-bypass-poplib-ssrf

Name: modelscan-bypass-poplib-ssrf
Availability: InStock

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Modelscan Bypass PoC: poplib.POP3 SSRF

Security research only. Do not use for malicious purposes.

Summary

Instantiates POP3 client connecting to attacker host on port 110. poplib is not in modelscan's unsafe_globals blocklist. DNS lookup + TCP connection triggered during pickle.load().

Reproduction

bash

pip install modelscan
modelscan scan -p pytorch_model.bin
# Result: No issues found

python3 -c "import pickle; pickle.load(open('pytorch_model.bin', 'rb'))"
# Result: Code executes

Affected

modelscan 0.7.6 (latest as of 2026-04-11)

Disclosure

Submitted to ProtectAI via Huntr.

manja316/modelscan-bypass-poplib-ssrf