PT-2026-55672 · Picklescan · Picklescan

Fredericdt · Published 2026-07-04 · Updated 2026-07-04 · CVE-2025-71359

NVD

CVSS v3.1

8.1

High

Base vector

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

picklescan before 0.0.29 fails to detect malicious pickle payloads that utilize lib2to3.pgen2.grammar.Grammar.loads in the reduce method, allowing remote code execution. Attackers can craft pickle files embedding dangerous code that evades picklescan detection and executes during pickle.load() deserialization.

Fix

Deserialization of Untrusted Data

Weakness Enumeration

CWE-502

Related Identifiers

CVE-2025-71359

Affected Products

Picklescan

References · 3

• https://github.com/mmaitre314/picklescan/security/advisories/GHSA-f54q-57x4-jg88 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2025-71359 · Security Note
• https://vulncheck.com/advisories/picklescan-unsafe-deserialization-via-lib2to3-pgen2-grammar-grammar-loads · Note