CVE-2025-71320

Critical

Description

picklescan before 0.0.33 contains an incomplete deny-list that fails to block pydoc.locate and operator.methodcaller functions, allowing attackers to bypass security checks. Remote attackers can craft malicious pickle files using these unblocked functions to achieve arbitrary code execution when the pickle is deserialized.

SeverityCritical

CVSS9.8

Exploit probability58. percentile0.8%

ProductPicklescan

PublishedJun 17, 2026

First seenJun 17, 2026

Weakness typeCWE-184CWE-184

How to fix

Update

picklescan0.0.33 or later

Vendor advisories

github.com/mmaitre314/picklescan/security/advisories/GHSA-84r2-jw7c-4r5q

Affected products

Product	Affected versions	Fixed in
picklescanPyPI	v < 0.0.33	0.0.33

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