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CVE-2026-0999
CVE-2026-0999
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
Published Feb 18, 2026
https://mattermost.com/security-updates
CVSS Score
Medium
4.3
Components Impacted
Components Impacted
Security Details
Security Details
Sonatype Research
Sonatype Research
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CVE-2026-0999 | Components Impacted | Sonatype Guide | Sonatype Guide
