漏洞信息
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Vulnerability Title
Insufficient authorization in shared channel membership sync allows remote cluster to remove users from arbitrary channels
Vulnerability Description
Mattermost versions 11.5.x <= 11.5.1, 10.11.x <= 10.11.13, 11.4.x <= 11.4.3 fail to validate that a remote cluster has access to a channel before processing membership removal requests during shared channel membership sync, which allows a malicious remote cluster to remove any user from any channel, including private channels, via crafted membership sync messages targeting channels the remote cluster is not authorized to access. Mattermost Advisory ID: MMSA-2026-00576
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N
Vulnerability Type
授权机制不正确
Vulnerability Title
Mattermost 安全漏洞
Vulnerability Description
Mattermost是美国Mattermost公司的一个开源协作平台。 Mattermost 11.5.1及之前的11.5.x版本、10.11.13及之前的10.11.x版本和11.4.3及之前的11.4.x版本存在安全漏洞,该漏洞源于共享频道成员同步时未验证远程集群是否有频道访问权限,可能导致恶意远程集群移除任意用户。
CVSS Information
N/A
Vulnerability Type
N/A