CVE-2025-71343

High

Description

picklescan before 0.0.30 fails to detect malicious pickle files that exploit lib2to3.pgen2.pgen.ParserGenerator.make_label function in the reduce method. Attackers can craft malicious pickle files with embedded code that evades detection but executes arbitrary commands when pickle.load() is called.

SeverityHigh

CVSS8.1

Exploit probability—

ProductPicklescan

PublishedJul 4, 2026

First seenJul 4, 2026

Weakness typeCWE-502Deserialization of untrusted data

How to fix

Update

picklescan0.0.30 or later

Vendor advisories

github.com/mmaitre314/picklescan/security/advisories/GHSA-p9w7-82w4-7q8m

Affected products

Product	Affected versions	Fixed in
picklescanPyPI	v < 0.0.30	0.0.30

Check your version

Choose the product and enter the version you run to see whether it falls in the affected range.

In the Intelligence 360 plan

Attack Surface Management

See the assets tied to your domains, the technologies they run and known vulnerabilities in one list.