| Package | Affected versions | Patched versions |
|---|---|---|
| github.com/mattermost/mattermost-server | ≥ 10.11.0≥ 10.11.0+incompatible≥ 11.1.0≥ 11.1.0+incompatible≥ 11.2.0≥ 11.2.0+incompatible< 5.3.2-0.20251212052346-61651b0df7eaall versions | 5.3.2-0.20251212052346-61651b0df7ea |
| github.com/mattermost/mattermost-server/v5 | all versions | |
| github.com/mattermost/mattermost-server/v6 | all versions | |
| github.com/mattermost/mattermost/server/v8 | < 8.0.0-20251212052346-61651b0df7ea | 8.0.0-20251212052346-61651b0df7ea |
| mattermost server | ≥ 10.11.0, < 10.11.10≥ 11.1.0, < 11.1.3≥ 11.2.0, < 11.2.2 | 10.11.1011.1.311.2.2 |
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
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