What’s Vulnerable › Vulnerabilities
CVE-2023-6202: Insecure Direct Object Reference in /plugins/focalboard/ api/v2/users of Mattermost Boards
- 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: 2023-11-27 · updated 2026-06-17
- Weakness: CWE-284
Description
Mattermost fails to perform proper authorization in the /plugins/focalboard/api/v2/users endpoint allowing an attacker who is a guest user and knows the ID of another user to get their information (e.g. name, surname, nickname) via Mattermost Boards.
Affected products
- Mattermost App Framework: through 7.8.12; from 8.0.0 through 8.1.3
References
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