CVE-2023-6202

MEDIUM

Mattermost < 7.8.12, 9.1.0-9.1.1 - Unauthenticated Improper Access Control via Boards User Endpoint

Title source: llm

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.

References (1)

Core 1

Core References

Vendor Advisory

https://mattermost.com/security-updates

Scores

CVSS v3 4.3

EPSS 0.0023

EPSS Percentile 45.9%

Attack Vector NETWORK

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N

CISA SSVC

Vulnrichment

Exploitation none

Automatable no

Technical Impact partial

Details

CWE

CWE-284

Status published

Products (3)

mattermost/mattermost < 7.8.12

mattermost/mattermost 9.1.0 - 9.1.1Go

mattermost/mattermost-server 0 - 7.8.13Go

Published Nov 27, 2023

Tracked Since Feb 18, 2026