{"id":"GHSA-9w97-9rqx-8v4j","summary":"Mattermost allows demoted guests to change group names","details":"Mattermost fails to update the permissions of the current session for a user who was just demoted to guest, allowing freshly demoted guests to change group names.\n\n","aliases":["BIT-mattermost-2023-50333","CVE-2023-50333","GO-2024-2444"],"modified":"2026-09-10T03:50:09.287262461Z","published":"2024-01-02T12:30:18Z","database_specific":{"nvd_published_at":"2024-01-02T10:15:08Z","cwe_ids":["CWE-284"],"severity":"LOW","github_reviewed":true,"github_reviewed_at":"2024-01-03T21:42:57Z"},"references":[{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2023-50333"},{"type":"WEB","url":"https://github.com/mattermost/mattermost/commit/61dd452fb2fcd3ac6f7b2e050f7f0a93a92d95fc"},{"type":"PACKAGE","url":"https://github.com/mattermost/mattermost"},{"type":"WEB","url":"https://mattermost.com/security-updates"}],"affected":[{"package":{"name":"github.com/mattermost/mattermost/server/v8","ecosystem":"Go","purl":"pkg:golang/github.com/mattermost/mattermost/server/v8"},"ranges":[{"type":"SEMVER","events":[{"introduced":"0"},{"fixed":"8.1.7"}]}],"database_specific":{"source":"https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2024/01/GHSA-9w97-9rqx-8v4j/GHSA-9w97-9rqx-8v4j.json","last_known_affected_version_range":"\u003c= 8.1.6"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:U/C:N/I:L/A:L"},{"type":"CVSS_V4","score":"CVSS:4.0/AV:N/AC:H/AT:N/PR:L/UI:P/VC:N/VI:L/VA:L/SC:N/SI:N/SA:N"}]}