CVE-2025-2527

Improper access control to group information

Published May 15, 2025 CVSS 3.1 · 4.3 Medium EPSS < 1% KEV · Not listed
Description
Mattermost versions 10.5.x <= 10.5.2, 9.11.x <= 9.11.11 failed to properly verify a user's permissions when accessing groups, which allows an attacker to view group information via an API request.

Remediation

Vendor Solution

Update Mattermost to versions 10.7.0, 10.5.3, 9.11.12 or higher.

Tracking

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Advisories

Source ID Title
EUVD EUVD EUVD-2025-15177 Mattermost Fails to Verify User's Permissions When Accessing Groups
Github GHSA Github GHSA GHSA-h356-3mfw-x368 Mattermost Fails to Verify User's Permissions When Accessing Groups
References
History
Type Values Removed Values Added
First Time appeared Mattermost mattermost Server
CPEs cpe:2.3:a:mattermost:mattermost_server:*:*:*:*:*:*:*:*
Vendors & Products 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 10.5.x <= 10.5.2, 9.11.x <= 9.11.11 failed to properly verify a user's permissions when accessing groups, which allows an attacker to view group information via an API request.
Title Improper access control to group information
Weaknesses CWE-863
References
Metrics cvssV3_1

{'score': 4.3, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N'}

Weaknesses

Sources

Status
PUBLISHED
Assigner
Mattermost
Published
Updated
May 15, 2025, 3:47 PM
Reserved
Mar 19, 2025, 2:23 PM
Status
Analyzed
Published
May 15, 2025, 4:15 PM
Modified
Jun 17, 2026, 9:07 AM