Mattermost fails to check if hardened mode is enabled when overriding the username and/or the icon when posting a post. If settings allowed integrations to override the username and profile picture when posting, a member could also override the username and icon when making a post even if the Hardened Mode setting was enabled
| Name | Vendor | Start Version | End Version |
|---|---|---|---|
| Mattermost | Mattermost | * | 7.8.12 (including) |
| Mattermost | Mattermost | 8.0.0 (including) | 8.1.3 (including) |