CVE-2025-71347 | picklescan before 0.0.33 fails to detect malicious pickle fi… | CVSS 8.1 HIGH

Description

picklescan before 0.0.33 fails to detect malicious pickle files using numpy.f2py.crackfortran.param_eval function in reduce methods, allowing attackers to bypass security checks. Remote attackers can embed undetected code in pickle files that executes during deserialization, enabling arbitrary code execution in applications loading untrusted pickle data.

Metadata

CVE ID: CVE-2025-71347
State: PUBLISHED
Assigner: VulnCheck
Reserved: 2026-06-20 12:48 UTC
Published: 2026-07-04 01:23 UTC
Last updated: 2026-07-04 01:23 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 < 0.0.33, 0.0.33

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-cffc-mxrf-mhh4) https://github.com/mmaitre314/picklescan/security/advisories/GHSA-cffc-mxrf-mhh4
VulnCheck Advisory: picklescan - Undetected Remote Code Execution via numpy.f2py.crackfortran.param_eval https://www.vulncheck.com/advisories/picklescan-undetected-remote-code-execution-via-numpy-f2py-crackfortran-param-eval