Mattermost versions 10.5.x <= 10.5.4, 9.11.x <= 9.11.13 fail to properly restrict API access to team information, allowing guest users to bypass permissions and view information about public teams they are not members of via a direct API call to /api/v4/teams/{team_id}.
References
History

Wed, 11 Jun 2025 14:15:00 +0000

Type Values Removed Values Added
Metrics ssvc

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


Wed, 11 Jun 2025 10:45:00 +0000

Type Values Removed Values Added
Description Mattermost versions 10.5.x <= 10.5.4, 9.11.x <= 9.11.13 fail to properly restrict API access to team information, allowing guest users to bypass permissions and view information about public teams they are not members of via a direct API call to /api/v4/teams/{team_id}.
Title Mattermost Guest User Information Disclosure Vulnerability
Weaknesses CWE-863
References
Metrics cvssV3_1

{'score': 3.1, 'vector': 'CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:N/A:N'}


cve-icon MITRE

Status: PUBLISHED

Assigner: Mattermost

Published: 2025-06-11T10:25:04.917Z

Updated: 2025-06-11T13:12:40.338Z

Reserved: 2025-04-30T07:45:45.749Z

Link: CVE-2025-4128

cve-icon Vulnrichment

Updated: 2025-06-11T13:12:36.277Z

cve-icon NVD

Status : Awaiting Analysis

Published: 2025-06-11T11:15:23.143

Modified: 2025-06-12T16:06:20.180

Link: CVE-2025-4128

cve-icon Redhat

No data.