{"id":"CVE-2024-4195","aliases":["GHSA-5fh7-7mw7-mmx5","GO-2024-2793"],"url":"https://o3.security/vulnerability/CVE-2024-4195","summary":"Mattermost allows team admins to promote guests to team admins","details":"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","published":"2024-04-26T08:26:00.685Z","modified":"2026-08-12T03:51:17.954107138Z","cvss":{"score":2.7,"severity":"LOW","vector":"CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:L/A:N"},"epss":null,"cisaKev":null,"exploitsKnown":0,"affectedPackages":[{"ecosystem":"Go","name":"github.com/mattermost/mattermost-server","fixedVersion":"9.5.3"},{"ecosystem":"Go","name":"github.com/mattermost/mattermost-server","fixedVersion":"8.1.12"}],"fix":{"url":"https://github.com/mattermost/mattermost/commit/1e3497e0595bb4f9908c94dd9d4685d48556b7e8","label":"mattermost/mattermost@1e3497e"},"references":[{"type":"WEB","url":"https://mattermost.com/security-updates"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2024/4xxx/CVE-2024-4195.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2024-4195"},{"type":"WEB","url":"https://github.com/mattermost/mattermost/commit/1e3497e0595bb4f9908c94dd9d4685d48556b7e8"},{"type":"WEB","url":"https://github.com/mattermost/mattermost/commit/f0872dd4e4ba34f061aa6982a71c7c29532aac2e"},{"type":"PACKAGE","url":"https://github.com/mattermost/mattermost"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-08-12T03:51:17.954107138Z"}}