CVE-2025-71358: picklescan - Remote Code Execution via idlelib.autocomplete.AutoComplete.get_entity

Severity: high (CVSS 8.1 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.3% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2026-06-22 · updated 2026-10-12
Weakness: CWE-502

Description

picklescan before 0.0.29 fails to detect malicious pickle files that exploit idlelib.autocomplete.AutoComplete.get_entity function in reduce methods. Attackers can embed undetected code in pickle files that executes arbitrary commands when loaded by victims using pickle.load().

Affected products

picklescan: before 0.0.29 — fixed in 0.0.29

How to fix

Upgrade to a fixed version: picklescan 0.0.29. Check the vendor advisory for mitigations.

References

https://github.com/mmaitre314/picklescan/security/advisories/GHSA-6w4w-5w54-rjvr
https://www.vulncheck.com/advisories/picklescan-remote-code-execution-via-idlelib-autocomplete-autocomplete-get-entity
https://github.com/mmaitre314/picklescan/security/advisories/GHSA-6w4w-5w54-rjvr

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