CVE-2025-71344 | picklescan before 0.0.30 (affected versions 0.0.26 and earli… | CVSS 8.1 HIGH

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.

Metadata

CVE ID: CVE-2025-71344
State: PUBLISHED
Assigner: VulnCheck
Reserved: 2026-06-20 12:48 UTC
Published: 2026-06-22 21:04 UTC
Last updated: 2026-06-22 21:04 UTC
Primary CWE: CWE-502
Deserialization of Untrusted Data
Vendor / Product: picklescan / picklescan
Sources: cve.org · NVD

Severity & Metrics

8.1 HIGH CVSS 3.1

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N

Affected products (1)

Vendor	Product	Platform	Versions
picklescan	picklescan	—	0 < 0.0.30, 0.0.30

Weakness (CWE)

CWE	Source	Description
CWE-502	cna	Deserialization of Untrusted Data

CVSS scores (2)

Score	Severity	Version	Source	Vector
8.1	HIGH	3.1	cna	CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N
7.6	HIGH	4.0	cna	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

References (2)

GitHub Security Advisory (GHSA-xp4f-hrf8-rxw7) https://github.com/mmaitre314/picklescan/security/advisories/GHSA-xp4f-hrf8-rxw7
VulnCheck Advisory: picklescan - Arbitrary Code Execution via Undetected ensurepip._run_pip Function https://www.vulncheck.com/advisories/picklescan-arbitrary-code-execution-via-undetected-ensurepip-run-pip-function