CVE-2025-56005
Gravedad CVSS v3.1:
CRÍTICA
Tipo:
CWE-502
Deserialización de datos no confiables
Fecha de publicación:
20/01/2026
Última modificación:
20/01/2026
Descripción
*** Pendiente de traducción *** An undocumented and unsafe feature in the PLY (Python Lex-Yacc) library 3.11 allows Remote Code Execution (RCE) via the `picklefile` parameter in the `yacc()` function. This parameter accepts a `.pkl` file that is deserialized with `pickle.load()` without validation. Because `pickle` allows execution of embedded code via `__reduce__()`, an attacker can achieve code execution by passing a malicious pickle file. The parameter is not mentioned in official documentation or the GitHub repository, yet it is active in the PyPI version. This introduces a stealthy backdoor and persistence risk.
Impacto
Puntuación base 3.x
9.80
Gravedad 3.x
CRÍTICA



