CVE-2023-6202

Insecure Direct Object Reference in /plugins/focalboard/ api/v2/users of Mattermost Boards

Published Nov 27, 2023 CVSS 3.1 · 4.3 Medium EPSS < 1% KEV · Not listed
Description
Mattermost fails to perform proper authorization in the /plugins/focalboard/api/v2/users endpoint allowing an attacker who is a guest user and knows the ID of another user to get their information (e.g. name, surname, nickname) via Mattermost Boards.

Remediation

Vendor Solution

Update Mattermost Server to versions 9.0.2, 9.1.1, 7.8.13, 8.1.4 or higher.

Tracking

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Advisories

Source ID Title
EUVD EUVD EUVD-2023-2916 Mattermost fails to perform proper authorization in the /plugins/focalboard/api/v2/users endpoint allowing an attacker who is a guest user and knows the ID of another user to get their information (e.g. name, surname, nickname) via Mattermost Boards.
Github GHSA Github GHSA GHSA-85jj-c9jr-9jhx Mattermost Improper Access Control vulnerability
References
History
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
Oct 11, 2024, 5:58 PM
Reserved
Nov 20, 2023, 12:24 PM
Status
Modified
Published
Nov 27, 2023, 10:15 AM
Modified
Jun 17, 2026, 6:50 AM