GHSA-424h-xj87-m937LowCVSS 3.1
Mattermost has an Incorrect Authorization vulnerability
🔗 CVE IDs covered (1)
📋 Description
Mattermost versions 10.5.x <= 10.5.10, 10.11.x <= 10.11.2 fail to properly validate guest user permissions when adding channel members which allows guest users to add any team members to their private channels via the /api/v4/channels/{channel_id}/members endpoint
🎯 Affected products3
- go/github.com/mattermost/mattermost/server/v8:< 8.0.0-20250820115038-ff30b84049f0
- go/github.com/mattermost/mattermost-server:>= 10.5.0, < 10.5.11
- go/github.com/mattermost/mattermost-server:>= 10.11.0, < 10.11.3
🔗 References (7)
- https://nvd.nist.gov/vuln/detail/CVE-2025-10545
- https://mattermost.com/security-updates
- https://github.com/mattermost/mattermost/pull/31319
- https://github.com/mattermost/mattermost/pull/33827
- https://github.com/mattermost/mattermost/commit/fb9c583f5e466a566a5122154ef337bbf2238902
- https://github.com/mattermost/mattermost/commit/ff30b84049f0193f0570d30e46cffc3602298c67
- https://github.com/advisories/GHSA-424h-xj87-m937