CVE-2025-4128: Mattermost allows guest users to view information about public teams they are not members of
Mattermost versions 10.5.x <= 10.5.4, 9.11.x <= 9.11.13 fail to properly restrict API access to team information, allowing guest users to bypass permissions and view information about public teams they are not members of via a direct API call to /api/v4/teams/{team_id}.
References
- github.com/advisories/GHSA-jwhw-xf5v-qgxc
- github.com/mattermost/mattermost
- github.com/mattermost/mattermost/commit/2138a5f2ca6f75e2b99f6a04ea569d0f680c4fab
- github.com/mattermost/mattermost/commit/701ddc896a107b13f457fbdbe229bce5019fc516
- mattermost.com/security-updates
- nvd.nist.gov/vuln/detail/CVE-2025-4128
Code Behaviors & Features
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