CVE-2025-71343

HIGH SEVERITY

CVSS Score & Metrics

Base Score

8.1 / 10

Vector String

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

Vulnerability 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.

Vulnerability Details

Published Date

July 04, 2026

Last Modified

July 04, 2026

CWE ID

CWE-502

Source

NVD

Vendor

picklescan

Product

picklescan

External References

https://github.com/mmaitre314/picklescan/security/advisories/GHSA-p9w7-82w4-7q8m
https://www.vulncheck.com/advisories/picklescan-arbitrary-code-execution-via-lib2to3-pgen2-pgen-parsergenerator-make-label-detection-bypass

CVE-2025-71343

CVSS Score & Metrics

Vulnerability Description

Vulnerability Details

External References

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