Zip Flag Bit Exploit Crashes Picklescan But Not PyTorch

Summary PickleScan fails to detect malicious pickle files inside PyTorch model archives when certain ZIP file flag bits are modified. By flipping specific bits in the ZIP file headers, an attacker can embed malicious pickle files that remain undetected by PickleScan while still being successfully...

PT-2025-10575

Name of the Vulnerable Software and Affected Versions PickleScan versions prior to 0.0.23 Description The issue allows an attacker to embed malicious pickle files inside PyTorch model archives by modifying specific ZIP file flag bits. This can lead to arbitrary code execution when loading a...