CVE-2025-71343
HIGHpicklescan - Arbitrary Code Execution via lib2to3.pgen2.pgen.ParserGenerator.make_label Detection Bypass
Title source: cnaDescription
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.
References (2)
Core 2
Core References
Vendor Advisory vendor-advisory
GitHub Security Advisory (GHSA-p9w7-82w4-7q8m)
https://github.com/mmaitre314/picklescan/security/advisories/GHSA-p9w7-82w4-7q8m
Third Party Advisory third-party-advisory
VulnCheck Advisory: picklescan - Arbitrary Code Execution via lib2to3.pgen2.pgen.ParserGenerator.make_label Detection Bypass
https://www.vulncheck.com/advisories/picklescan-arbitrary-code-execution-via-lib2to3-pgen2-pgen-parsergenerator-make-label-detection-bypass
Scores
CVSS v3
8.1
EPSS
0.0030
EPSS Percentile
22.4%
Attack Vector
NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N
CISA SSVC
Vulnrichment
Exploitation
poc
Automatable
no
Technical Impact
total
Details
CWE
CWE-502
Status
published
Products (2)
picklescan/picklescan
< 0.0.30
picklescan/picklescan
0.0.30
Published
Jul 04, 2026
Tracked Since
Jul 04, 2026