Ghostwire

CVE-2025-71343: picklescan before 0.0.30 fails to detect malicious pickle files that exploit...

HIGH CVSS 8.1 Exploit Available

Published: July 4, 2026 | Last Modified: July 4, 2026

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.

Ghostwire Analysis — What This Means Practically

High CVSS score indicates significant risk — exploitation could lead to substantial data exposure or system compromise.
Exploit code is reported to be available, increasing the likelihood of active exploitation.

This analysis is generated by Ghostwire from NVD, CISA KEV, EPSS, and open-source intelligence data. Verify findings through primary sources before acting.

References

github.com/mmaitre314/picklescan/security/advisories/GHSA-p9w7-82w4-7q8m
www.vulncheck.com/advisories/picklescan-arbitrary-code-execution-via-lib2to3-pge
www.tenable.com/cve/CVE-2025-71343
www.cnnvd.org.cn/home/globalSearch?keyword=CVE-2025-71343