| Package | Affected versions | Patched versions |
|---|---|---|
| github.com/mattermost/mattermost-server | ≥ 10.0.0-rc1+incompatible, < 10.5.4+incompatible≥ 10.6.0-rc1+incompatible, < 10.7.1+incompatible≥ 9.0.0-rc1+incompatible, < 9.11.13+incompatible | 10.5.4+incompatible10.7.1+incompatible9.11.13+incompatible |
| github.com/mattermost/mattermost-server/v5 | all versions | |
| github.com/mattermost/mattermost-server/v6 | all versions | |
| github.com/mattermost/mattermost/server/v8 | ≥ 10.0.0-rc1, < 10.5.4≥ 10.6.0-rc1, < 10.7.1≥ 9.0.0-rc1, < 9.11.13< 8.0.0-20250414110750-c23f44fe8ed0 | 10.5.410.7.19.11.138.0.0-20250414110750-c23f44fe8ed0 |
| mattermost server | ≥ 10.5.0, < 10.5.4≥ 10.7.0, < 10.7.1≥ 9.11.0, < 9.11.13 | 10.5.410.7.19.11.13 |
Mattermost versions 10.7.x <= 10.7.0, 10.5.x <= 10.5.3, 9.11.x <= 9.11.12 fail to properly enforce access controls for guest users accessing channel member information, allowing authenticated guest users to view metadata about members of public channels via the channel members API endpoint.
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