Instituto Nacional de ciberseguridad. Sección Incibe
Instituto Nacional de Ciberseguridad. Sección INCIBE-CERT

CVE-2026-48207

Gravedad CVSS v3.1:
CRÍTICA
Tipo:
CWE-502 Deserialización de datos no confiables
Fecha de publicación:
21/05/2026
Última modificación:
21/05/2026

Descripción

*** Pendiente de traducción *** Deserialization of untrusted data in Apache Fory PyFory. PyFory&amp;#39;s ReduceSerializer could bypass documented DeserializationPolicy validation hooks during reduce-state restoration and global-name resolution. An application is vulnerable if it deserializes attacker-controlled data using PyFory Python-native mode with strict mode disabled and relies on DeserializationPolicy to restrict unsafe classes, functions, or module attributes.<br /> <br /> This issue affects Apache Fory: from before 1.0.0.<br /> <br /> Mitigation: Users of Apache Fory are recommended to upgrade to version 1.0.0 or later, which enforces DeserializationPolicy validation for the affected ReduceSerializer paths and thus fixes this issue.