CVE-2025-71342: picklescan - Undetected Remote Code Execution via idlelib.run.Executive.runcode

Severity: high (CVSS 8.1 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.5% 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 0.0.30 fails to detect malicious pickle files using idlelib.run.Executive.runcode in reduce methods. Attackers can embed undetected code in pickle files that executes during pickle.load, enabling remote code execution in PyTorch models and supply chain attacks.

Affected products

picklescan: before 0.0.30 — fixed in 0.0.30

How to fix

Upgrade to a fixed version: picklescan 0.0.30. Check the vendor advisory for mitigations.

References

https://github.com/mmaitre314/picklescan/security/advisories/GHSA-m869-42cg-3xwr
https://www.vulncheck.com/advisories/picklescan-undetected-remote-code-execution-via-idlelib-run-executive-runcode
https://github.com/mmaitre314/picklescan/security/advisories/GHSA-m869-42cg-3xwr

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