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

CVE-2026-53776

Gravedad CVSS v4.0:
CRÍTICA
Tipo:
No Disponible / Otro tipo
Fecha de publicación:
16/06/2026
Última modificación:
16/06/2026

Descripción

*** Pendiente de traducción *** Perry before 0.5.1166 contains a JWT validation vulnerability that allows remote attackers to bypass token expiration by exploiting the unconditional setting of validate_exp = false in the verify_decode helper within the stdlib JWT verification path. Attackers in possession of a previously issued bearer token can present expired tokens to any jwt.verify() call and retain authenticated access indefinitely, bypassing force-expired sessions such as user logout or administrative revocation.