CVE-2025-3611

Improper Access Control in Mattermost allows System Managers to view team details despite role restrictions

Published May 30, 2025 CVSS 3.1 · 3.1 Low EPSS < 1% KEV · Not listed
Description
Mattermost versions 10.7.x <= 10.7.0, 10.5.x <= 10.5.3, 9.11.x <= 9.11.12 fails to properly enforce access control restrictions for System Manager roles, allowing authenticated users with System Manager privileges to view team details they should not have access to via direct API requests to team endpoints, even when explicitly configured with 'No access' to Teams in the System Console.

Remediation

Vendor Solution

Update Mattermost to versions 10.8.0, 10.7.1, 10.5.4, 9.11.13 or higher.

Tracking

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Advisories

Source ID Title
EUVD EUVD EUVD-2025-16492 Mattermost fails to properly enforce access control restrictions for System Manager roles
Github GHSA Github GHSA GHSA-86jg-35xj-3vv5 Mattermost fails to properly enforce access control restrictions for System Manager roles
References
History
Type Values Removed Values Added
First Time appeared Mattermost
Mattermost mattermost Server
CPEs cpe:2.3:a:mattermost:mattermost_server:*:*:*:*:*:*:*:*
cpe:2.3:a:mattermost:mattermost_server:10.7.0:-:*:*:*:*:*:*
cpe:2.3:a:mattermost:mattermost_server:10.7.0:rc1:*:*:*:*:*:*
cpe:2.3:a:mattermost:mattermost_server:10.7.0:rc2:*:*:*:*:*:*
Vendors & Products Mattermost
Mattermost mattermost Server
Type Values Removed Values Added
Metrics ssvc

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

Type Values Removed Values Added
Description Mattermost versions 10.7.x <= 10.7.0, 10.5.x <= 10.5.3, 9.11.x <= 9.11.12 fails to properly enforce access control restrictions for System Manager roles, allowing authenticated users with System Manager privileges to view team details they should not have access to via direct API requests to team endpoints, even when explicitly configured with 'No access' to Teams in the System Console.
Title Improper Access Control in Mattermost allows System Managers to view team details despite role restrictions
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'}

Weaknesses

Sources

Status
PUBLISHED
Assigner
Mattermost
Published
Updated
May 30, 2025, 2:37 PM
Reserved
Apr 14, 2025, 8:40 PM
Status
Analyzed
Published
May 30, 2025, 3:15 PM
Modified
Jun 17, 2026, 9:20 AM