Mattermost versions 9.6.0, 9.5.x before 9.5.3, and 8.1.x before 8.1.12 fail to fully validate role changes, which allows an attacker authenticated as a team admin to promote guests to team admins via crafted HTTP requests.
| Package (Ecosystem) | Introduced | Fixed | Limit |
|---|---|---|---|
| github.com/mattermost/mattermost-server(Go) | 9.5.0 | 9.5.3 | N/A |
| github.com/mattermost/mattermost-server(Go) | 8.1.0 | 8.1.12 | N/A |
CVSS Metrics
