CVE-2023-5160: Mattermost

Medium severity, CVSS 4.3. EPSS: 0.4% chance of exploitation in the next 30 days.

Mattermost fails to check the Show Full Name option at the /api/v4/teams/TEAM_ID/top/team_members endpoint allowing a member to get the full name of another user even if the Show Full Name option was disabled

Affected products

• Mattermost Mattermost: from 7.0.0, before 7.8.10 (fixed in 7.8.10); from 8.0.0, before 8.1.1 (fixed in 8.1.1)

Published 2023-10-02. Last modified 2026-06-17.