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.
Advisories
Source ID Title
EUVD EUVD EUVD-2022-34671 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.
Fixes

Solution

Update Mattermost to version v7.0.0, 6.7.1, 6.6.2, 6.5.2, 6.3.9 or higher.


Workaround

No workaround given by the vendor.

References
History

Wed, 16 Jul 2025 13:45:00 +0000

Type Values Removed Values Added
Metrics epss

{'score': 0.00178}

epss

{'score': 0.00172}


Tue, 15 Jul 2025 13:45:00 +0000

Type Values Removed Values Added
Metrics epss

{'score': 0.00143}

epss

{'score': 0.00178}


Sat, 07 Dec 2024 00:15:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


cve-icon MITRE

Status: PUBLISHED

Assigner: Mattermost

Published:

Updated: 2024-12-06T23:08:12.973Z

Reserved: 2022-07-14T00:00:00

Link: CVE-2022-2408

cve-icon Vulnrichment

Updated: 2024-08-03T00:39:07.253Z

cve-icon NVD

Status : Modified

Published: 2022-07-14T18:15:08.420

Modified: 2024-11-21T07:00:55.827

Link: CVE-2022-2408

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

No data.