| Package | Affected versions | Patched versions |
|---|---|---|
| github.com/mattermost/mattermost-server | ≥ 9.0.0+incompatible, < 9.3.0+incompatible | 9.3.0+incompatible |
| github.com/mattermost/mattermost-server/v5 | all versions | |
| github.com/mattermost/mattermost-server/v6 | all versions | |
| github.com/mattermost/mattermost/server/v8 | ≥ 9.0.0, < 9.3.0< 8.1.8all versions | 9.3.08.1.8 |
| mattermost server | ≤ 8.1.7 |
Mattermost fails to check the required permissions in the POST /api/v4/channels/stats/member_count API resulting in channel member counts being leaked to a user without permissions.
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