| Package | Affected versions | Patched versions |
|---|---|---|
| github.com/mattermost/mattermost-server | ≥ 10.11.0, < 10.11.5≥ 10.12.0, < 10.12.2≥ 10.5.0, < 10.5.13≥ 11.0.0, < 11.0.3all versions | 10.11.510.12.210.5.1311.0.3 |
| github.com/mattermost/mattermost-server/v5 | all versions | |
| github.com/mattermost/mattermost-server/v6 | all versions | |
| github.com/mattermost/mattermost/server/v8 | < 8.0.0-20251015091448-abbf01b9db45 | 8.0.0-20251015091448-abbf01b9db45 |
| mattermost server | ≥ 10.11.0, < 10.11.5≥ 10.12.0, < 10.12.2≥ 10.5.0, < 10.5.13≥ 11.0.0, < 11.0.3 | 10.11.510.12.210.5.1311.0.3 |
Mattermost versions 11.0.x <= 11.0.2, 10.12.x <= 10.12.1, 10.11.x <= 10.11.4, 10.5.x <= 10.5.12 fail to sanitize team email addresses to be visible only to Team Admins, which allows any authenticated user to view team email addresses via the GET /api/v4/channels/{channel_id}/common_teams endpoint
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