Mattermost fails to restrict which parameters values it takes from the request during signup allowing an attacker to register users as inactive, thus blocking them from later accessing Mattermost without the system admin activating their accounts.
The product constructs all or part of a command, data structure, or record using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify how it is parsed or interpreted when it is sent to a downstream component.
| Name | Vendor | Start Version | End Version |
|---|---|---|---|
| Mattermost_server | Mattermost | * | 7.8.9 (excluding) |
| Mattermost_server | Mattermost | 7.9.0 (including) | 7.10.5 (excluding) |
| Mattermost_server | Mattermost | 8.0.0 (including) | 8.0.0 (including) |