GHSA-x3r8-2hmh-89f5
Mattermost has an Invite Token Replay Vulnerability via Channel Membership Manipulation
Packages
| Ecosystem | Package | Affected | Fixed in |
|---|---|---|---|
| Go | github.com/mattermost/mattermost | >= 10.12.0, < 10.12.2 | 10.12.2 |
| Go | github.com/mattermost/mattermost | >= 10.11.0-rc1, < 10.11.5 | 10.11.5 |
| Go | github.com/mattermost/mattermost | >= 11.0.0-alpha.1, < 11.0.4 | 11.0.4 |
| Go | github.com/mattermost/mattermost/server/v8 | < 8.0.0-20251031095924-e7e23b94e006 | 8.0.0-20251031095924-e7e23b94e006 |
| Go | github.com/mattermost/mattermost-server | < 11.0.4 | 11.0.4 |
Details
As written in the advisory (Markdown source, shown as plain text).
Mattermost versions 10.11.x < 10.11.5, 11.0.x < 11.0.4, 10.12.x < 10.12.2 fail to invalidate remote cluster invite tokens when using the legacy (version 1) protocol or when the confirming party does not provide a refreshed token, which allows an attacker who has obtained an invite token to authenticate as the remote cluster and perform limited actions on shared channels even after the invitation has been legitimately confirmed.
References
External links from the advisory. They lead to third-party sites.
- https://nvd.nist.gov/vuln/detail/CVE-2025-13324
- https://github.com/mattermost/mattermost/commit/364c2203de00fe0d8424b6b46d6f0eeb02a2539a
- https://github.com/mattermost/mattermost/commit/7ccb62db7958abd6a4b21a06c5a4f5367a8f8b1f
- https://github.com/mattermost/mattermost/commit/9f54e5cdc3aef412945ff0e6a58338f7b549bdda
- https://github.com/mattermost/mattermost
- https://mattermost.com/security-updates