CVEs-PoC/2025/CVE-2025-4128.md

CVE-2025-4128

Description

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}.

POC

Reference

• https://mattermost.com/security-updates

Github

No PoCs found on GitHub currently.