An issue was discovered in Mattermost Server before 4.3.0, 4.2.1, and 4.1.2. It allows attackers to gain privileges by using a registered OAuth application with personal access tokens.
The product does not properly assign, modify, track, or check privileges for an actor, creating an unintended sphere of control for that actor.
| Name | Vendor | Start Version | End Version |
|---|---|---|---|
| Mattermost_server | Mattermost | * | 4.1.2 (excluding) |
| Mattermost_server | Mattermost | 4.2.0 (including) | 4.2.1 (excluding) |
| Mattermost_server | Mattermost | 4.3.0-rc1 (including) | 4.3.0-rc1 (including) |
| Mattermost_server | Mattermost | 4.3.0-rc2 (including) | 4.3.0-rc2 (including) |
| Mattermost_server | Mattermost | 4.3.0-rc3 (including) | 4.3.0-rc3 (including) |
| Mattermost_server | Mattermost | 4.3.0-rc4 (including) | 4.3.0-rc4 (including) |