{"id":"CVE-2023-6547","details":"Mattermost fails to validate team membership when a user attempts to access a playbook, allowing a user with permissions to a playbook but no permissions to the team the playbook is on to access and modify the playbook. This can happen if the user was once a member of the team, got permissions to the playbook and was then removed from the team. \n\n","aliases":["BIT-mattermost-2023-6547"],"modified":"2026-04-10T05:07:39.333433Z","published":"2023-12-12T09:15:09.857Z","references":[{"type":"REPORT","url":"https://mattermost.com/security-updates"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/mattermost/mattermost-server","events":[{"introduced":"0"},{"last_affected":"f8f79e13ef11d5bd2527d21a1967bd37f46a0fae"},{"introduced":"b47be1c0f5787562ddf430dd5c5b8b3c35748b06"},{"last_affected":"d3dae4d45e22e6239c409427d798274c0df16ccc"}],"database_specific":{"versions":[{"introduced":"0"},{"last_affected":"8.1.5"},{"introduced":"9.2.0"},{"last_affected":"9.2.1"}]}}],"versions":["@mattermost/client@8.1.1","@mattermost/client@9.2.0","@mattermost/types@8.1.1","@mattermost/types@9.2.0","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","cloud-2023-07-26-1","server/public/v0.0.5","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","v8.1.2","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","v9.2.0","v9.2.0-rc2","v9.2.1"],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2023-6547.json"}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N"}]}