CVE-2022-2408

Guest accounts can list all public channels

Published Jul 14, 2022 CVSS 3.1 · 4.3 Medium EPSS < 1% KEV · Not listed
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.

Remediation

Vendor Solution

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

Tracking

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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.
References
History
Type Values Removed Values Added
Metrics epss

{'score': 0.00178}

epss

{'score': 0.00172}

Type Values Removed Values Added
Metrics epss

{'score': 0.00143}

epss

{'score': 0.00178}

Type Values Removed Values Added
Metrics ssvc

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

Weaknesses

Sources

Status
PUBLISHED
Assigner
Mattermost
Published
Updated
Dec 6, 2024, 11:08 PM
Reserved
Jul 14, 2022, 12:00 AM
Status
Modified
Published
Jul 14, 2022, 6:15 PM
Modified
Jun 17, 2026, 4:41 AM