| Package | Affected versions | Patched versions |
|---|---|---|
| github.com/mattermost/mattermost | < 5.3.2-0.20250815165020-c8d66301415dall versions | 5.3.2-0.20250815165020-c8d66301415d |
| github.com/mattermost/mattermost-server | < 5.3.2-0.20250815165020-c8d66301415dall versions | 5.3.2-0.20250815165020-c8d66301415d |
| github.com/mattermost/mattermost-server/v5 | < 5.3.2-0.20250815165020-c8d66301415dall versions | 5.3.2-0.20250815165020-c8d66301415d |
| github.com/mattermost/mattermost-server/v6 | < 5.3.2-0.20250815165020-c8d66301415dall versions | 5.3.2-0.20250815165020-c8d66301415d |
| github.com/mattermost/mattermost/server/v8 | < 8.0.0-20250815165020-c8d66301415d | 8.0.0-20250815165020-c8d66301415d |
| github.com/mattermost/mattermost/v5 | all versions | |
| mattermost server | < 11.0.0 | 11.0.0 |
Mattermost versions < 11 fail to properly restrict access to archived channel search API which allows guest users to discover archived public channels via the /api/v4/teams/{team_id}/channels/search_archived endpoint
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