| Package | Affected versions | Patched versions |
|---|---|---|
| github.com/mattermost/mattermost | all versions | |
| github.com/mattermost/mattermost-server | all versions | |
| github.com/mattermost/mattermost-server/v5 | < 5.20.0 | 5.20.0 |
| mattermost server | < 5.20.0 | 5.20.0 |
An issue was discovered in Mattermost Server before 5.20.0. Non-members can receive broadcasted team details via the update_team WebSocket event, aka MMSA-2020-0012.
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