{"id":"GHSA-xp9j-8p68-9q93","summary":"Mattermost Server Improper Access Control","details":"Improper Access Control in Mattermost Server versions 8.1.x before 8.1.11 allows an attacker that is in a channel with an active call to keep participating in the call even if they are removed from the channel\n\n","aliases":["BIT-mattermost-2024-21848","CVE-2024-21848","GO-2024-2707"],"modified":"2026-09-10T03:50:12.879851319Z","published":"2024-04-05T09:30:38Z","database_specific":{"severity":"LOW","github_reviewed":true,"github_reviewed_at":"2024-04-05T17:03:58Z","nvd_published_at":"2024-04-05T09:15:09Z","cwe_ids":["CWE-273","CWE-284"]},"references":[{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2024-21848"},{"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":"8.1.11"}]}],"database_specific":{"source":"https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2024/04/GHSA-xp9j-8p68-9q93/GHSA-xp9j-8p68-9q93.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:N/A:N"},{"type":"CVSS_V4","score":"CVSS:4.0/AV:N/AC:H/AT:N/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N"}]}