CVE-2025-71369: picklescan - Unsafe Deserialization via torch.utils.data.datapipes.utils.decoder.basichandlers

Severity: high (CVSS 8.1 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.6% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2026-07-04 · updated 2026-10-12
Weakness: CWE-502

Description

picklescan before 0.0.28 fails to detect malicious pickle files that use torch.utils.data.datapipes.utils.decoder.basichandlers in reduce methods, allowing attackers to bypass safety checks. Remote attackers can embed undetected malicious code in pickle files that executes during deserialization, enabling remote code execution.

Affected products

picklescan: before 0.0.28 — fixed in 0.0.28

How to fix

Upgrade to a fixed version: picklescan 0.0.28. Check the vendor advisory for mitigations.

References

https://github.com/mmaitre314/picklescan/security/advisories/GHSA-h3qp-7fh3-f8h4
https://www.vulncheck.com/advisories/picklescan-unsafe-deserialization-via-torch-utils-data-datapipes-utils-decoder-basichandlers
https://github.com/mmaitre314/picklescan/security/advisories/GHSA-h3qp-7fh3-f8h4

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