| Package | Affected versions | Patched versions |
|---|---|---|
| github.com/mattermost/mattermost-server | ≥ 10.11.0-rc1, < 10.11.11≥ 10.11.0-rc1+incompatible, < 10.11.11+incompatible≥ 11.2.0-rc1, < 11.2.3≥ 11.2.0-rc1+incompatible, < 11.2.3+incompatible≥ 11.3.0-rc1, < 11.3.1≥ 11.3.0-rc1+incompatible, < 11.3.1+incompatible< 5.3.2-0.20260105134819-cc427af41b2a | 10.11.1110.11.11+incompatible11.2.311.2.3+incompatible11.3.111.3.1+incompatible5.3.2-0.20260105134819-cc427af41b2a |
| github.com/mattermost/mattermost-server/v5 | all versions | |
| github.com/mattermost/mattermost-server/v6 | all versions | |
| github.com/mattermost/mattermost/server/v8 | < 8.0.0-20260105134819-cc427af41b2a | 8.0.0-20260105134819-cc427af41b2a |
| mattermost server | ≥ 10.11.0, < 10.11.11≥ 11.2.0, < 11.2.3≥ 11.3.0, < 11.3.1 | 10.11.1111.2.311.3.1 |
Mattermost versions 11.3.x <= 11.3.0, 11.2.x <= 11.2.2, 10.11.x <= 10.11.10 fail to filter invite IDs based on user permissions, which allows regular users to bypass access control restrictions and register unauthorized accounts via leaked invite IDs during team creation. Mattermost Advisory ID: MMSA-2025-00565
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