{"id":"CVE-2024-4198","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 team admin to demote users to guest via crafted HTTP requests.\n\n","aliases":["GHSA-5qx9-9ffj-5r8f","GO-2024-2794"],"modified":"2026-04-10T05:15:58.448446Z","published":"2024-04-26T09:15:13.097Z","references":[{"type":"ADVISORY","url":"https://mattermost.com/security-updates"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/mattermost/mattermost-server","events":[{"introduced":"096c9ea12a2144f832e330e9a0f4d3862ca20b9f"},{"fixed":"c91d188755c63cc41237105b5f871a341e5faafd"},{"introduced":"99d819d25d0b16b3faed901b1fe5c41de7655e9c"},{"fixed":"baf02ba4e27d641a53785ab0c6bc9a9870b237a6"},{"introduced":"0"},{"last_affected":"9fc0f464a376499ca5859944483f09a32370a85a"},{"introduced":"0"},{"last_affected":"d80b9a3f7666acaa3e2c17d9cc2a39d92b2f77f3"},{"introduced":"0"},{"last_affected":"a914a4f25c46193cfa3f3e02eee8f532d9b58f7d"},{"introduced":"0"},{"last_affected":"9fc0f464a376499ca5859944483f09a32370a85a"}],"database_specific":{"versions":[{"introduced":"8.1.0"},{"fixed":"8.1.12"},{"introduced":"9.5.0"},{"fixed":"9.5.3"},{"introduced":"0"},{"last_affected":"9.6.0-NA"},{"introduced":"0"},{"last_affected":"9.6.0-rc1"},{"introduced":"0"},{"last_affected":"9.6.0-rc2"},{"introduced":"0"},{"last_affected":"9.6.0-rc3"}]}}],"versions":["@mattermost/client@8.1.1","@mattermost/client@9.5.0","@mattermost/client@9.6.0","@mattermost/types@8.1.1","@mattermost/types@9.5.0","@mattermost/types@9.6.0","cloud-2022-07-20-1","cloud-2022-08-10-1","cloud-2022-09-08-1","cloud-2022-10-06-1","cloud-2022-11-11-1","cloud-2022-11-24-1","server/public/v0.0.10","server/public/v0.0.11","server/public/v0.0.12","server/public/v0.0.13","server/public/v0.0.5","server/public/v0.0.6","server/public/v0.0.7","server/public/v0.0.8","server/public/v0.0.9","v0.5.0","v4.10.0-rc1","v4.2.0-rc1","v4.3.0-rc1","v4.4.0-rc1","v4.5.0-rc1","v4.6.0-rc1","v4.6.0-rc2","v4.7.0-rc1","v4.8.0-rc1","v4.9.0-rc1","v5.0.0-rc1","v5.1.0-rc1","v5.2.0-rc1","v5.2.0-rc2","v8.1.0","v8.1.0-rc2","v8.1.1","v8.1.1-rc1","v8.1.1-rc2","v8.1.10","v8.1.10-rc1","v8.1.11","v8.1.11-rc1","v8.1.12-rc1","v8.1.12-rc2","v8.1.12-rc3","v8.1.2","v8.1.2-rc1","v8.1.2-rc2","v8.1.3","v8.1.3-rc1","v8.1.3-rc2","v8.1.4","v8.1.4-rc1","v8.1.4-rc2","v8.1.5","v8.1.5-rc1","v8.1.5-rc2","v8.1.6","v8.1.6-rc1","v8.1.7","v8.1.7-rc1","v8.1.7-rc2","v8.1.7-rc3","v8.1.8","v8.1.8-rc1","v8.1.8-rc2","v8.1.9","v8.1.9-rc1","v8.1.9-rc2","v9.5.0","v9.5.0-rc3","v9.5.1","v9.5.1-rc1","v9.5.2","v9.5.3-rc1","v9.5.3-rc2","v9.5.3-rc3","v9.6.0","v9.6.0-rc1","v9.6.0-rc2","v9.6.0-rc3"],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2024-4198.json"}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:L/A:N"}]}