GHSA-mc2f-jgj6-6cp3
Mattermost fails to properly invalidate personal access tokens upon user deactivation
Packages
| Ecosystem | Package | Affected | Fixed in |
|---|---|---|---|
| Go | github.com/mattermost/mattermost/server/v8 | >= 10.7.0-rc1, < 10.7.1 | 10.7.1 |
| Go | github.com/mattermost/mattermost/server/v8 | >= 10.6.0-rc1, < 10.6.3 | 10.6.3 |
| Go | github.com/mattermost/mattermost/server/v8 | >= 10.0.0-rc1, < 10.5.4 | 10.5.4 |
| Go | github.com/mattermost/mattermost/server/v8 | >= 9.0.0-rc1, < 9.11.13 | 9.11.13 |
| Go | github.com/mattermost/mattermost/server/v8 | < 8.0.0-20250402193107-65343f84a783 | 8.0.0-20250402193107-65343f84a783 |
Details
As written in the advisory (Markdown source, shown as plain text).
Mattermost versions 10.7.x <= 10.7.0, 10.6.x <= 10.6.2, 10.5.x <= 10.5.3, 9.11.x <= 9.11.12 fails to properly invalidate personal access tokens upon user deactivation, allowing deactivated users to maintain full system access by exploiting access token validation flaws via continued usage of previously issued tokens.
References
External links from the advisory. They lead to third-party sites.