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How to Load Pickle Files Safely in Python

This code demonstrates how to load pickle files safely in Python by using a restricted unpickler that only allows specific, trusted classes, preventing arbitrary code execution from untrusted pickles.

pickle security serialization
Python 
import pickle

# Default pickle.load is unsafe: it executes arbitrary code when unpickling.
class Unsafe:
    def __reduce__(self):
        return (eval, ("open('/tmp/pickle_demo.txt', 'w').write('pwned')",))

# Create a malicious payload (simulating untrusted source)
malicious_data = pickle.dumps(Unsafe())

# Safe ap…
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