CVE-2025-53971 (GCVE-0-2025-53971)
Vulnerability from cvelistv5
Published
2025-08-21 07:31
Modified
2025-08-21 14:51
Severity ?
3.8 (Low) - CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:L/I:L/A:N
CWE
  • CWE-863 - Incorrect Authorization
Summary
Mattermost versions 10.5.x <= 10.5.8, 9.11.x <= 9.11.17 fail to properly validate authorization for team scheme role modifications which allows Team Admins to demote Team Members to Guests via the PUT /api/v4/teams/team-id/members/user-id/schemeRoles API endpoint.
References
Impacted products
Vendor Product Version
Mattermost Mattermost Version: 10.5.0   ≤ 10.5.8
Version: 9.11.0   ≤ 9.11.17
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