CVE-2025-71376

picklescan - Arbitrary Code Execution via Undetected idlelib.autocomplete.AutoComplete.fetch_completions

State: Published
Severity: 7.6 High
Published: Jun 23, 2026
Updated: Jun 23, 2026
Reserved: Jun 20, 2026

Description

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

Scores

CVSS	Score	Vector	Source
4.0	7.6 High	CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:P/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N	VulnCheck
3.1	8.1 High	CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N	VulnCheck

Weaknesses

CWE-502 Deserialization of Untrusted Data

Affected Products

Product	Versions
picklescanpicklescan	before 0.0.29Affected 0.0.29Not affected

References

GitHub Security Advisory (GHSA-7cq8-mj8x-j263)vendor-advisory
VulnCheck Advisory: picklescan - Arbitrary Code Execution via Undetected idlelib.autocomplete.AutoComplete.fetch_completionsthird-party-advisory

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