Description
Mattermost versions 10.11.x <= 10.11.9 fail to enforce invite permissions when updating team settings, which allows team administrators without proper permissions to bypass restrictions and add users to their team via API requests. Mattermost Advisory ID: MMSA-2025-00561
References (1)
Core 1
Core References
Various Sources vendor-advisory
https://mattermost.com/security-updates
Scores
CVSS v3
3.8
EPSS
0.0003
EPSS Percentile
8.9%
Attack Vector
NETWORK
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:L/I:L/A:N
CISA SSVC
Vulnrichment
Exploitation
none
Automatable
no
Technical Impact
partial
Details
CWE
CWE-862
Status
published
Products (3)
mattermost/mattermost
0 - 8.0.0-20251215190648-6404ab29acc0Go
mattermost/mattermost-server
11.1.0Go
mattermost/mattermost_server
10.11.0 - 10.11.10
Published
Feb 16, 2026
Tracked Since
Feb 18, 2026