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

CVE-2026-105302

Gravedad CVSS v3.1:
MEDIA
Tipo:
CWE-200 Revelación de información
Fecha de publicación:
05/10/2026
Última modificación:
06/10/2026

Descripción

*** Pendiente de traducción *** A flaw was found in the User Session Note mapper of the Keycloak identity and access management solution. The issue occurs because the mapper does not validate whether a requested session note contains sensitive internal credentials, such as federated access tokens from external identity providers. This allows a delegated client administrator to leak a user's upstream bearer tokens into the tokens issued to their managed application, potentially leading to unauthorized access to the user's data on external platforms.