CVE-2025-71359

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.

CVSS v3 8.1 HIGH

8.1^/10

CVSS v3 : HIGH

Vector :

Exploitability : 2.8 / Impact : 5.2

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction REQUIRED

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact NONE

Scope UNCHANGED

References

Link	Resource
https://github.com/mmaitre314/picklescan/security/advisories/GHSA-f54q-57x4-jg88
https://www.vulncheck.com/advisories/picklescan-unsafe-deserialization-via-lib2to3-pgen2-grammar-grammar-loads
https://github.com/mmaitre314/picklescan/security/advisories/GHSA-f54q-57x4-jg88

Configurations

No configuration.

History

30 Sep 2026, 16:10

Type	Values Removed	Values Added
Summary		(es) picklescan anterior a la versión 0.0.29 no logra detectar cargas útiles maliciosas de pickle que utilizan lib2to3.pgen2.grammar.Grammar.loads en el método reduce, permitiendo la ejecución remota de código. Los atacantes pueden crear archivos pickle que incrustan código peligroso que evade la detección de picklescan y se ejecuta durante la deserialización de pickle.load().

Information

Published : 2026-07-04 02:16

Updated : 2026-10-12 21:10

NVD link : CVE-2025-71359

Mitre link : CVE-2025-71359

CVE.ORG link : CVE-2025-71359

JSON object : View

Products Affected

No product.

CWE

CWE-502

Deserialization of Untrusted Data

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