Description
Mattermost versions 11.1.x <= 11.1.2, 10.11.x <= 10.11.9, 11.2.x <= 11.2.1 fail to properly validate login method restrictions which allows an authenticated user to bypass SSO-only login requirements via userID-based authentication. Mattermost Advisory ID: MMSA-2025-00548
References (1)
Scores
CVSS v3
5.4
EPSS
0.0005
EPSS Percentile
15.9%
Attack Vector
NETWORK
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N
CISA SSVC
Vulnrichment
Exploitation
none
Automatable
no
Technical Impact
partial
Details
CWE
CWE-303
Status
published
Products (3)
mattermost/mattermost
0 - 8.0.0-20251212052346-61651b0df7eaGo
mattermost/mattermost-server
11.1.0Go
mattermost/mattermost_server
10.11.0 - 10.11.10
Published
Feb 16, 2026
Tracked Since
Feb 18, 2026