CVE-2026-63097
Gravedad CVSS v4.0:
MEDIA
Tipo:
No Disponible / Otro tipo
Fecha de publicación:
17/07/2026
Última modificación:
17/07/2026
Descripción
*** Pendiente de traducción *** Dendrite through 0.13.8 contains an improper access control vulnerability in the syncapi /context endpoint (syncapi/routing/context.go) that allows authenticated local users to access post-leave room state events by exploiting a flawed membership check that evaluates only the RoomExists field while ignoring IsInRoom, HasBeenInRoom, and Membership fields. Attackers who have left a room can call the rooms context API endpoint for a previously permitted event and receive unfiltered current room state that the /messages and /sync endpoints correctly withhold.
Impacto
Puntuación base 4.0
5.30
Gravedad 4.0
MEDIA
Puntuación base 3.x
4.30
Gravedad 3.x
MEDIA



