Headline
GHSA-r6qj-894f-5hr2: Mattermost has a Missing Authorization vulnerability
Mattermost versions 10.11.x <= 10.11.1, 10.10.x <= 10.10.2, 10.5.x <= 10.5.10 fail to verify a user has permission to join a Mattermost team using the original invite token which allows any attacked to join any team on a Mattermost server regardless of restrictions via manipulating the RelayState.
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- GitHub Advisory Database
- GitHub Reviewed
- CVE-2025-58075
Mattermost has a Missing Authorization vulnerability
High severity GitHub Reviewed Published Oct 16, 2025 to the GitHub Advisory Database • Updated Oct 16, 2025
Package
gomod github.com/mattermost/mattermost-server (Go)
Affected versions
>= 10.11.0, < 10.11.2
>= 10.10.0, < 10.10.3
>= 10.5.0, < 10.5.11
Patched versions
10.11.2
10.10.3
10.5.11
gomod github.com/mattermost/mattermost/server/v8 (Go)
< 8.0.0-20250815100400-2d5cdc6e217e
8.0.0-20250815100400-2d5cdc6e217e
Description
Published to the GitHub Advisory Database
Oct 16, 2025
Last updated
Oct 16, 2025
EPSS score