CVE-2021-39164

LOW3.1EPSS 0.27%

Improper authorisation of members discloses room membership to non-members

發布日:2021/9/1修改日:2026/3/13
也稱為:GHSA-3x4c-pq33-4w3qPYSEC-2021-425

描述

### Impact Unauthorised users can access the membership (list of members, with their display names) of a room if they know the ID of the room. The vulnerability is limited to rooms with `shared` history visibility. Furthermore, the unauthorised user must be using an account on a vulnerable homeserver that is in the room. ### Patches Server administrators should upgrade to 1.41.1 or later. ### Workarounds Administrators of servers that use a reverse proxy could, with potentially unacceptable loss of functionality, block the following endpoints: * `/_matrix/client/r0/rooms/{room_id}/members` with `at` query parameter * `/_matrix/client/unstable/rooms/{room_id}/members` with `at` query parameter ### References n/a ### For more information If you have any questions or comments about this advisory, e-mail us at [email protected].

受影響套件(3)

CVSS 分數

來源版本嚴重程度向量
osvCVSS 3.1LOW3.1CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:N/A:N

參考連結(11)