CVE-2026-0999
Published: Feb 16, 2026
Modified: Feb 17, 2026
CVSS v3.1
5.4
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
| Vendor | Product | Versions |
|---|---|---|
Mattermost | Mattermost | affected 11.1.0 - <= 11.1.2affected 10.11.0 - <= 10.11.9affected 11.2.0 - <= 11.2.1unaffected 11.3.0unaffected 11.1.3+2 more versions |
Weaknesses (CWE)
CVSS v3.1 Details
CVSS v3.1 Vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N
Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality
Integrity
Availability
References
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