GHSA-qwwm-c582-82rx
Mattermost allows unauthorized channel member management through playbook runs
Packages
| Ecosystem | Package | Affected | Fixed in |
|---|---|---|---|
| Go | github.com/mattermost/mattermost-server | < 0.0.0-20250520060012-d0380305ef7a | 0.0.0-20250520060012-d0380305ef7a |
| Go | github.com/mattermost/mattermost/server/v8 | < 8.0.0-20250520060012-d0380305ef7a | 8.0.0-20250520060012-d0380305ef7a |
| Go | github.com/mattermost/mattermost/server/v8 | >= 10.5.0, < 10.5.6 | 10.5.6 |
| Go | github.com/mattermost/mattermost/server/v8 | >= 9.11.0, < 9.11.16 | 9.11.16 |
| Go | github.com/mattermost/mattermost/server/v8 | >= 10.8.0, < 10.8.1 | 10.8.1 |
| Go | github.com/mattermost/mattermost/server/v8 | >= 10.7.0, < 10.7.3 | 10.7.3 |
| Go | github.com/mattermost/mattermost/server/v8 | >= 10.6.0, < 10.6.6 | 10.6.6 |
Details
As written in the advisory (Markdown source, shown as plain text).
Mattermost versions 10.5.x <= 10.5.5, 9.11.x <= 9.11.15, 10.8.x <= 10.8.0, 10.7.x <= 10.7.2, 10.6.x <= 10.6.5 fail to properly enforce channel member management permissions in playbook runs, allowing authenticated users without the 'Manage Channel Members' permission to add or remove users from public and private channels by manipulating playbook run participants when the run is linked to a channel.
References
External links from the advisory. They lead to third-party sites.