What’s Vulnerable › Vulnerabilities
CVE-2023-5160: Full name disclosure via team top membership with Show Full Name option disabled
- Severity: medium (CVSS 4.3 v3.1)
- Exploited in the wild: not listed in CISA KEV
- EPSS: 0.4% probability of exploitation in the next 30 days
- Public exploit or detection template: none known
- Published: 2023-10-02 · updated 2026-06-17
- Weakness: CWE-200
Description
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 App Framework: from 7.0.0 before 7.8.10; from 8.0.0 before 8.1.1 — fixed in 7.8.10, 8.1.1
How to fix
Upgrade to a fixed version: Mattermost App Framework 7.8.10, 8.1.1. Check the vendor advisory for mitigations.
References
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