{"id":"CVE-2024-6428","aliases":["EUVD-2024-47531","GHSA-rvp5-8mrw-f62x"],"status":"published","title":"Limited DoS due to permitting creating users with user-defined IDs","description":"Mattermost versions 9.8.0, 9.7.x \u003c= 9.7.4, 9.6.x \u003c= 9.6.2, 9.5.x \u003c= 9.5.5 fail to prevent specifying a RemoteId when creating a new user which allows an attacker to specify both a remoteId and the user ID, resulting in creating a user with a user-defined user ID. This can cause some broken functionality in User Management such administrative actions against the user not working.","severity":{"version":"3.1","score":5.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L","level":"medium","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-10","score":0.00394,"percentile":0.33979,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-284"],"published":"2024-07-03T08:39:28Z","modified":"2026-10-28T02:31:11Z","products":[{"vendor":"mattermost","product":"mattermost"}],"references":[{"url":"https://mattermost.com/security-updates","tags":["x_transferred","Vendor Advisory","web"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2024-6428","tags":["advisory"]},{"url":"https://github.com/advisories/GHSA-rvp5-8mrw-f62x"},{"url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2024/6xxx/CVE-2024-6428.json","tags":["advisory"]}],"sources":{"cve":[{"id":"CVE-2024-6428","title":"Limited DoS due to permitting creating users with user-defined IDs","description":"Mattermost versions 9.8.0, 9.7.x \u003c= 9.7.4, 9.6.x \u003c= 9.6.2, 9.5.x \u003c= 9.5.5 fail to prevent specifying a RemoteId when creating a new user which allows an attacker to specify both a remoteId and the user ID, resulting in creating a user with a user-defined user ID. This can cause some broken functionality in User Management such administrative actions against the user not working.","status":"published","published":"2024-07-03T08:39:28.121Z","modified":"2024-08-01T21:41:03.285Z","cvss":[{"version":"3.1","score":5.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L","level":"medium","assessor":"cna"}],"cwes":["CWE-284"],"updated_at":"2026-11-02T14:34:11.305983Z"}],"euvd":[{"id":"EUVD-2024-47531","description":"Mattermost versions 9.8.0, 9.7.x \u003c= 9.7.4, 9.6.x \u003c= 9.6.2, 9.5.x \u003c= 9.5.5 fail to prevent specifying a RemoteId when creating a new user which allows an attacker to specify both a remoteId and the user ID, resulting in creating a user with a user-defined user ID. This can cause some broken functionality in User Management such administrative actions against the user not working.","status":"published","published":"2024-07-03T08:39:28Z","modified":"2024-08-01T21:41:03Z","cvss":[{"version":"3.1","score":5.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L","level":"medium"}],"updated_at":"2026-11-03T03:50:32.736279Z"}],"ghsa":[{"id":"GHSA-rvp5-8mrw-f62x","title":"Mattermost versions 9.8.0, 9.7.x \u003c= 9.7.4, 9.6.x \u003c= 9.6.2, 9.5.x \u003c= 9.5.5 fail to prevent...","description":"Mattermost versions 9.8.0, 9.7.x \u003c= 9.7.4, 9.6.x \u003c= 9.6.2, 9.5.x \u003c= 9.5.5 fail to prevent specifying a RemoteId when creating a new user which allows an attacker to specify both a remoteId and the user ID, resulting in creating a user with a user-defined user ID. This can cause some broken functionality in User Management such administrative actions against the user not working.","status":"published","published":"2024-07-03T18:48:12Z","modified":"2024-07-03T18:48:12Z","cvss":[{"version":"3.1","score":5.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L","level":"medium"}],"cwes":["CWE-284"],"updated_at":"2026-11-02T14:57:38.140316Z"}],"nvd":[{"id":"CVE-2024-6428","description":"Mattermost versions 9.8.0, 9.7.x \u003c= 9.7.4, 9.6.x \u003c= 9.6.2, 9.5.x \u003c= 9.5.5 fail to prevent specifying a RemoteId when creating a new user which allows an attacker to specify both a remoteId and the user ID, resulting in creating a user with a user-defined user ID. This can cause some broken functionality in User Management such administrative actions against the user not working.","status":"published","published":"2024-07-03T09:15:08.013Z","modified":"2026-06-17T08:17:59.793Z","cvss":[{"version":"3.1","score":5.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L","level":"medium","assessor":"secondary"},{"version":"3.1","score":6.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:L","level":"medium","assessor":"primary"}],"cwes":["CWE-284"],"updated_at":"2026-11-02T14:10:10.545705Z"}],"osv":[{"id":"CVE-2024-6428","title":"Limited DoS due to permitting creating users with user-defined IDs","description":"Mattermost versions 9.8.0, 9.7.x \u003c= 9.7.4, 9.6.x \u003c= 9.6.2, 9.5.x \u003c= 9.5.5 fail to prevent specifying a RemoteId when creating a new user which allows an attacker to specify both a remoteId and the user ID, resulting in creating a user with a user-defined user ID. This can cause some broken functionality in User Management such administrative actions against the user not working.","status":"published","published":"2024-07-03T08:39:28.121Z","modified":"2026-10-28T02:31:11.032983335Z","cvss":[{"version":"3.1","score":5.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L","level":"medium"}],"cwes":["CWE-284"],"updated_at":"2026-11-02T15:44:45.405014Z"}]}}