6.5
/ 10
MEDIUM
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
Description
Mattermost versions 10.5.x <= 10.5.6, 10.8.x <= 10.8.1, 10.7.x <= 10.7.3, 9.11.x <= 9.11.16 fail to verify authorization when retrieving cached posts by PendingPostID which allows an authenticated user to read posts in private channels they don't have access to via guessing the PendingPostID of recently created posts.
Basic Information
ID
CVE-2025-6226
Source
Mattermost
Published
Jul 18, 2025 at 08:48
Modified
Aug 7, 2025 at 09:53
Affected Product
Vendor
Mattermost
Product
Mattermost
Version
10.5.0
Affected Versions
Mattermost Mattermost 10.5.0
Mattermost Mattermost 10.8.0
Mattermost Mattermost 10.7.0
Mattermost Mattermost 9.11.0
Mattermost Mattermost 10.8.0
Mattermost Mattermost 10.7.0
Mattermost Mattermost 9.11.0