{"id":"CVE-2023-6202","aliases":["EUVD-2023-2916","GHSA-85jj-c9jr-9jhx"],"status":"published","title":"Insecure Direct Object Reference in /plugins/focalboard/ api/v2/users of Mattermost Boards","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 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Advisory","web"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2023-6202","tags":["advisory"]},{"url":"https://github.com/advisories/GHSA-85jj-c9jr-9jhx"},{"url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2023/6xxx/CVE-2023-6202.json","tags":["advisory"]},{"url":"https://github.com/mattermost/mattermost","tags":["package"]}],"sources":{"cve":[{"id":"CVE-2023-6202","title":"Insecure Direct Object Reference in /plugins/focalboard/ api/v2/users of Mattermost Boards","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.\n\n","status":"published","published":"2023-11-27T09:12:04.786Z","modified":"2024-10-11T17:58:15.479Z","cvss":[{"version":"3.1","score":4.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N","level":"medium","assessor":"cna"}],"cwes":["CWE-284"],"updated_at":"2026-11-02T14:35:25.469654Z"}],"euvd":[{"id":"EUVD-2023-2916","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.\n\n","status":"published","published":"2023-11-27T09:12:04Z","modified":"2024-10-11T17:58:15Z","cvss":[{"version":"3.1","score":4.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N","level":"medium"}],"updated_at":"2026-11-03T00:27:39.149807Z"}],"ghsa":[{"id":"GHSA-85jj-c9jr-9jhx","title":"Mattermost Improper Access Control vulnerability","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.\n\n","status":"published","published":"2023-11-27T12:30:55Z","modified":"2023-11-28T20:53:17Z","cvss":[{"version":"3.1","score":4.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N","level":"medium"}],"cwes":["CWE-284"],"updated_at":"2026-11-02T14:37:22.840002Z"}],"nvd":[{"id":"CVE-2023-6202","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.\n\n","status":"published","published":"2023-11-27T10:15:08.677Z","modified":"2026-06-17T06:50:17.577Z","cvss":[{"version":"3.1","score":4.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N","level":"medium","assessor":"secondary"},{"version":"3.1","score":4.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N","level":"medium","assessor":"primary"}],"cwes":["CWE-284"],"updated_at":"2026-11-02T14:08:49.393375Z"}],"osv":[{"id":"CVE-2023-6202","title":"Insecure Direct Object Reference in /plugins/focalboard/ api/v2/users of Mattermost Boards","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.\n\n","status":"published","published":"2023-11-27T09:12:04.786Z","modified":"2026-10-28T02:31:13.464453302Z","cvss":[{"version":"3.1","score":4.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N","level":"medium"}],"cwes":["CWE-284"],"updated_at":"2026-11-02T15:44:36.851042Z"},{"id":"GHSA-85jj-c9jr-9jhx","title":"Mattermost Improper Access Control vulnerability","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.\n\n","status":"published","published":"2023-11-27T12:30:55Z","modified":"2026-09-10T03:49:58.905302619Z","cvss":[{"version":"3.1","score":4.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N","level":"medium"}],"cwes":["CWE-284"],"updated_at":"2026-11-02T15:46:41.732368Z"}]}}