Description
Mattermost versions 9.5.x <= 9.5.3, 9.7.x <= 9.7.1, 9.6.x <= 9.6.1, 8.1.x <= 8.1.12 fail to enforce proper access control which allows a user to run a slash command in a channel they are not a member of via linking a playbook run to that channel and running a slash command as a playbook task command.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| Mattermost | Mattermost | 9.5.0 – ≤ 9.5.3, 9.7.0 – ≤ 9.7.1, 9.6.0 – ≤ 9.6.1, 8.1.0 – ≤ 8.1.12 | 9.8.0 |