GHSA-x3hx-ch7p-8xgg
Mattermost allows regular users to access archived channel content and files
Packages
| Ecosystem | Package | Affected | Fixed in |
|---|---|---|---|
| Go | github.com/mattermost/mattermost-server | < 11.0.0-alpha.1 | 11.0.0-alpha.1 |
| Go | github.com/mattermost/mattermost/server/v8 | < 8.0.0-20250815165020-c8d66301415d | 8.0.0-20250815165020-c8d66301415d |
Details
As written in the advisory (Markdown source, shown as plain text).
Mattermost versions < 11.0 fail to properly enforce the "Allow users to view archived channels" setting which allows regular users to access archived channel content and files via the "Open in Channel" functionality from followed threads
References
External links from the advisory. They lead to third-party sites.