Mattermost versions 9.10.x <= 9.10.2, 9.11.x <= 9.11.1, 9.5.x <= 9.5.9 fail to check that the origin of the message in an integration action matches with the original post metadata which allows an authenticated user to delete an arbitrary post.
| Software | From | Fixed in |
|---|---|---|
| mattermost / mattermost_server | 9.5.0 | 9.5.10 |
| mattermost / mattermost_server | 9.10.0 | 9.10.3 |
| mattermost / mattermost_server | 9.11.0 | 9.11.2 |