CVE-2022-2408

MEDIUM

Mattermost <= 6.7.0 - Unauthorized Public Channel List Exposure via Guest Account

Title source: llm

Description

The Guest account feature in Mattermost version 6.7.0 and earlier fails to properly restrict the permissions, which allows a guest user to fetch a list of all public channels in the team, in spite of not being part of those channels.

References (1)

Core 1

Core References

Vendor Advisory x_refsource_misc

https://mattermost.com/security-updates/

Scores

CVSS v3 4.3

EPSS 0.0011

EPSS Percentile 29.3%

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-200 CWE-863

Status published

Products (4)

mattermost/mattermost 6.6.0

mattermost/mattermost 6.6.1

mattermost/mattermost 6.7.0

mattermost/mattermost < 6.3.8

Published Jul 14, 2022

Tracked Since Feb 18, 2026