GHSA-cwfj-642j-gfh4
Mattermost fails to properly enforce read permissions in search API endpoints
Packages
| Ecosystem | Package | Affected | Fixed in |
|---|---|---|---|
| Go | github.com/mattermost/mattermost/server/v8 | < 8.0.0-20260107142155-0481bd1fb045 | 8.0.0-20260107142155-0481bd1fb045 |
| Go | github.com/mattermost/mattermost-server | < 5.3.2-0.20260107142155-0481bd1fb045 | 5.3.2-0.20260107142155-0481bd1fb045 |
| Go | github.com/mattermost/mattermost-server | >= 10.11.0-rc1, < 10.11.11 | 10.11.11 |
| Go | github.com/mattermost/mattermost-server | >= 11.2.0-rc1, < 11.2.3 | 11.2.3 |
| Go | github.com/mattermost/mattermost-server | >= 11.3.0-rc1, < 11.3.1 | 11.3.1 |
Details
As written in the advisory (Markdown source, shown as plain text).
Mattermost versions 11.3.x <= 11.3.0, 11.2.x <= 11.2.2, 10.11.x <= 10.11.10 fail to properly enforce read permissions in search API endpoints which allows guest users without read permissions to access posts and files in channels via search API requests. Mattermost Advisory ID: MMSA-2025-00554
References
External links from the advisory. They lead to third-party sites.