CVE-2025-41443
Guest user can discover active public channels
Summary
Guest user can discover active public channels
Original description
The description as published by the source.
Mattermost versions 10.5.x <= 10.5.12, 10.11.x <= 10.11.2 fail to properly validate guest user permissions when accessing channel information which allows guest users to discover active public channels and their metadata via the /api/v4/teams/{team_id}/channels/ids endpoint
Source: OSV.dev (Open Source Vulnerabilities) NVD GitHub Advisory OSV
References
- advisory github.com
- advisory nvd.nist.gov
- web mattermost.com