{"id":"CVE-2024-4195","aliases":["EUVD-2024-1100","GHSA-5fh7-7mw7-mmx5","GO-2024-2793"],"status":"published","title":"Mattermost allows team admins to promote guests to team admins","description":"Mattermost versions 9.6.0, 9.5.x before 9.5.3, and 8.1.x before 8.1.12 fail to fully validate role changes, which allows an attacker authenticated as a team admin to promote guests to team admins via crafted HTTP requests.","severity":{"version":"3.1","score":2.7,"vector":"CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:L/A:N","level":"low","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-10","score":0.00502,"percentile":0.43307,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"cwes":["CWE-284"],"published":"2024-04-26T08:26:00Z","modified":"2026-10-28T02:30:32Z","fixes":[{"ecosystem":"Go","package":"github.com/mattermost/mattermost-server","fixed_in":["9.5.3","8.1.12","8.1.12+incompatible","9.5.3+incompatible"],"sources":["ghsa","osv"]}],"affected":[{"source":"ghsa","ecosystem":"Go","package":"github.com/mattermost/mattermost-server","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"9.5.0"},{"last_affected":"9.5.2"},{"fixed":"9.5.3"}]}]},{"source":"ghsa","ecosystem":"Go","package":"github.com/mattermost/mattermost-server","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"8.1.0"},{"last_affected":"8.1.11"},{"fixed":"8.1.12"}]}]},{"source":"osv","ecosystem":"Go","package":"github.com/mattermost/mattermost-server","ranges":[{"type":"SEMVER","events":[{"introduced":"9.5.0"},{"fixed":"9.5.3"}]}]},{"source":"osv","ecosystem":"Go","package":"github.com/mattermost/mattermost-server","ranges":[{"type":"SEMVER","events":[{"introduced":"8.1.0"},{"fixed":"8.1.12"}]}]},{"source":"osv","ecosystem":"Go","package":"github.com/mattermost/mattermost-server","ranges":[{"type":"SEMVER","events":[{"introduced":"8.1.0+incompatible"},{"fixed":"8.1.12+incompatible"},{"introduced":"9.5.0+incompatible"},{"fixed":"9.5.3+incompatible"}]}]}],"products":[{"vendor":"jenkins","product":"mattermost"},{"vendor":"mattermost","product":"mattermost"},{"vendor":"mattermost","product":"mattermost_server"}],"references":[{"url":"https://mattermost.com/security-updates","tags":["x_transferred","Vendor Advisory","web"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2024-4195","tags":["advisory"]},{"url":"https://github.com/mattermost/mattermost/commit/1e3497e0595bb4f9908c94dd9d4685d48556b7e8","tags":["web"]},{"url":"https://github.com/mattermost/mattermost/commit/f0872dd4e4ba34f061aa6982a71c7c29532aac2e","tags":["web"]},{"url":"https://github.com/advisories/GHSA-5fh7-7mw7-mmx5","tags":["advisory"]},{"url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2024/4xxx/CVE-2024-4195.json","tags":["advisory"]},{"url":"https://github.com/mattermost/mattermost","tags":["package"]}],"sources":{"cve":[{"id":"CVE-2024-4195","description":"Mattermost versions 9.6.0, 9.5.x before 9.5.3, and 8.1.x before 8.1.12 fail to fully validate role changes, which allows an attacker authenticated as a team admin to promote guests to team admins via crafted HTTP requests.\n\n","status":"published","published":"2024-04-26T08:26:00.685Z","modified":"2024-08-01T20:33:52.915Z","cvss":[{"version":"3.1","score":2.7,"vector":"CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:L/A:N","level":"low","assessor":"cna"}],"cwes":["CWE-284"],"updated_at":"2026-11-02T14:34:16.78507Z"}],"euvd":[{"id":"EUVD-2024-1100","description":"Mattermost versions 9.6.0, 9.5.x before 9.5.3, and 8.1.x before 8.1.12 fail to fully validate role changes, which allows an attacker authenticated as a team admin to promote guests to team admins via crafted HTTP requests.\n\n","status":"published","published":"2024-04-26T08:26:00Z","modified":"2024-08-01T20:33:52Z","cvss":[{"version":"3.1","score":2.7,"vector":"CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:L/A:N","level":"low"}],"updated_at":"2026-11-03T03:50:37.375536Z"}],"ghsa":[{"id":"GHSA-5fh7-7mw7-mmx5","title":"Mattermost allows team admins to promote guests to team admins","description":"Mattermost versions 9.6.0, 9.5.x before 9.5.3, and 8.1.x before 8.1.12 fail to fully validate role changes, which allows an attacker authenticated as a team admin to promote guests to team admins via crafted HTTP requests.\n\n","status":"published","published":"2024-04-26T09:30:35Z","modified":"2024-04-26T19:06:44Z","cvss":[{"version":"3.1","score":2.7,"vector":"CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:L/A:N","level":"low"}],"cwes":["CWE-284"],"updated_at":"2026-11-02T14:37:47.338362Z"}],"nvd":[{"id":"CVE-2024-4195","description":"Mattermost versions 9.6.0, 9.5.x before 9.5.3, and 8.1.x before 8.1.12 fail to fully validate role changes, which allows an attacker authenticated as a team admin to promote guests to team admins via crafted HTTP requests.\n\n","status":"published","published":"2024-04-26T09:15:12.897Z","modified":"2026-06-17T08:01:18.48Z","cvss":[{"version":"3.1","score":2.7,"vector":"CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:L/A:N","level":"low","assessor":"secondary"},{"version":"3.1","score":2.7,"vector":"CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:L/A:N","level":"low","assessor":"primary"}],"cwes":["CWE-284"],"updated_at":"2026-11-02T14:09:53.50104Z"}],"osv":[{"id":"CVE-2024-4195","description":"Mattermost versions 9.6.0, 9.5.x before 9.5.3, and 8.1.x before 8.1.12 fail to fully validate role changes, which allows an attacker authenticated as a team admin to promote guests to team admins via crafted HTTP requests.\n\n","status":"published","published":"2024-04-26T08:26:00.685Z","modified":"2026-10-28T02:30:32.626144694Z","cvss":[{"version":"3.1","score":2.7,"vector":"CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:L/A:N","level":"low"}],"cwes":["CWE-284"],"updated_at":"2026-11-02T15:44:41.963899Z"},{"id":"GHSA-5fh7-7mw7-mmx5","title":"Mattermost allows team admins to promote guests to team admins","description":"Mattermost versions 9.6.0, 9.5.x before 9.5.3, and 8.1.x before 8.1.12 fail to fully validate role changes, which allows an attacker authenticated as a team admin to promote guests to team admins via crafted HTTP requests.\n\n","status":"published","published":"2024-04-26T09:30:35Z","modified":"2024-06-05T16:43:09.434336Z","cvss":[{"version":"3.1","score":2.7,"vector":"CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:L/A:N","level":"low"}],"cwes":["CWE-284"],"updated_at":"2026-11-02T15:46:38.213481Z"},{"id":"GO-2024-2793","title":"Mattermost allows team admins to promote guests to team admins in github.com/mattermost/mattermost-server","description":"Mattermost allows team admins to promote guests to team admins in github.com/mattermost/mattermost-server","status":"published","published":"2024-06-05T15:10:52Z","modified":"2026-03-03T04:55:17.626009Z","updated_at":"2026-11-02T15:47:01.453823Z"}]}}