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Status published
Medium
CVE-2022-2408
Guest accounts can list all public channels
Vulnerability Description
The Guest account feature in Mattermost version 6.7.0 and earlier fails to properly restrict the permissions, which allows a guest user to fetch a list of all public channels in the team, in spite of not being part of those channels.
Impact Analysis
Refer to official advisory for detailed impact metrics.
Remediation
Ensure systems are updated to the latest vendor-supplied patch levels.
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Credits & Attribution
The following person or organization is credited with identifying this vulnerability, as recorded in the NVD database:
- Thanks to Rohit KC for contributing to this improvement under the Mattermost responsible disclosure policy.
References
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Affected Vendor
Mattermost
View all reports →Affected Software
Mattermost
Vulnerable Versions:
unspecified, 6.4.x, 6.7.x 6.7.0, 6.5.x, 6.6.x
Timeline
Official Publish:
July 14th, 2022
Last Modified:
December 6th, 2024
Added to House:
July 21st, 2026
CVSS Vectors
V3:
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N