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Furthermore, the unauthorised user must be using an account on a vulnerable homeserver that is in the room. Server administrators should upgrade to 1.41.1 or later in order to receive the patch. One workaround is available. Administrators of servers that use a reverse proxy could, with potentially unacceptable loss of functionality, block the endpoints: `/_matrix/client/r0/rooms/{room_id}/members` with `at` query parameter, and `/_matrix/client/unstable/rooms/{room_id}/members` with `at` query parameter."}, {"lang": "es", "value": "Matrix es un ecosistema para la Mensajer\u00eda Instant\u00e1nea federada abierta y voz sobre IP. En versiones 1.41.0 y anteriores, unos usuarios no autorizados pueden acceder a la membres\u00eda (lista de miembros, con sus nombres para mostrar) de una sala si conocen el ID de la misma. La vulnerabilidad es limitada a las salas con visibilidad del historial \"shared\". 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