Insufficient Validation of Permissions in Mattermost 6.1 and Earlier Allows Unauthorized Access to Archived Channels

Insufficient Validation of Permissions in Mattermost 6.1 and Earlier Allows Unauthorized Access to Archived Channels

CVE-2021-37864 · MEDIUM Severity

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N

Mattermost 6.1 and earlier fails to sufficiently validate permissions while viewing archived channels, which allows authenticated users to view contents of archived channels even when this is denied by system administrators by directly accessing the APIs.

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