CVE-2025-1945 Information

Description

picklescan before 0.0.23 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 loaded by PyTorch’s torch.load(). This can lead to arbitrary code execution when loading a compromised model.

Reference

https://github.com/mmaitre314/picklescan/commit/e58e45e0d9e091159c1554f9b04828bbb40b9781 https://github.com/mmaitre314/picklescan/security/advisories/GHSA-w8jq-xcqf-f792 https://sites.google.com/sonatype.com/vulnerabilities/cve-2025-1945