CVE-2025-71344

picklescan - Arbitrary Code Execution via Undetected ensurepip._run_pip Function

State: Published
Severity: 7.6 High
Published: Jun 22, 2026
Updated: Jun 23, 2026
Reserved: Jun 20, 2026

Description

picklescan before 0.0.30 (affected versions 0.0.26 and earlier) fails to detect the ensurepip._run_pip built-in function when scanning pickle files, allowing attackers to execute arbitrary code. Malicious pickle files embedding ensurepip._run_pip calls in __reduce__ methods bypass picklescan detection and achieve remote code execution upon pickle.load() invocation.

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 0.0.30Affected 0.0.30Not affected

References

GitHub Security Advisory (GHSA-xp4f-hrf8-rxw7)vendor-advisory
VulnCheck Advisory: picklescan - Arbitrary Code Execution via Undetected ensurepip._run_pip Functionthird-party-advisory

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