CVE-2025-1889: PyTorch Model Files Can Bypass Pickle Scanners via Unexpected Pickle Extensions
(updated )
Picklescan fails to detect hidden pickle files embedded in PyTorch model archives due to its reliance on file extensions for detection. This allows an attacker to embed a secondary, malicious pickle file with a non-standard extension inside a model archive, which remains undetected by picklescan but is still loaded by PyTorch’s torch.load() function. This can lead to arbitrary code execution when the model is loaded.
References
- github.com/advisories/GHSA-769v-p64c-89pr
- github.com/mmaitre314/picklescan
- github.com/mmaitre314/picklescan/commit/baf03faf88fece56a89534d12ce048e5ee36e50e
- github.com/mmaitre314/picklescan/security/advisories/GHSA-769v-p64c-89pr
- nvd.nist.gov/vuln/detail/CVE-2025-1889
- sites.google.com/sonatype.com/vulnerabilities/cve-2025-1889
Code Behaviors & Features
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