{"id":"CVE-2025-27715","summary":"Auto-Enrollment of Team Admins into Private Channels without explicit consent","details":"Mattermost versions 9.11.x \u003c= 9.11.8 fail to prompt for explicit approval before adding a team admin to a private channel, which team admins to joining private channels via crafted permalink links without explicit consent from them.","aliases":["BIT-mattermost-2025-27715","GHSA-cw7q-5cgc-h3h9","GO-2025-3555"],"modified":"2026-05-18T05:56:16.269735211Z","published":"2025-03-21T08:22:25.321Z","related":["openSUSE-SU-2025:14937-1"],"database_specific":{"cwe_ids":["CWE-863"],"cna_assigner":"Mattermost","unresolved_ranges":[{"extracted_events":[{"introduced":"9.11.0"},{"last_affected":"9.11.8"}],"source":"AFFECTED_FIELD"}],"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/27xxx/CVE-2025-27715.json"},"references":[{"type":"WEB","url":"https://mattermost.com/security-updates"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/27xxx/CVE-2025-27715.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2025-27715"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/mattermost/mattermost","events":[{"introduced":"0bc2ddd42375a75ab14e63f038165150d4f07659"},{"fixed":"07bb4f96ed7400080f2ded5e910a947b8e6c168f"}],"database_specific":{"extracted_events":[{"introduced":"9.11.0"},{"fixed":"9.11.9"}],"cpe":"cpe:2.3:a:mattermost:mattermost_server:*:*:*:*:*:*:*:*","source":"CPE_FIELD"}}],"versions":["v9.11.9-rc2","v9.11.9-rc1","v9.11.8","v9.11.7-rc3","v9.11.7","v9.11.7-rc2","v9.11.7-rc1","v9.11.6","v9.11.6-rc2","v9.11.6-rc1","v9.11.5","v9.11.5-rc1","v9.11.4","v9.11.4-rc1","v9.11.3","v9.11.3-rc2","v9.11.3-rc1","v9.11.2","v9.11.2-rc2","v9.11.2-rc1","v9.11.1-rc1","v9.11.1","v9.11.0-rc3","v9.11.0","@mattermost/types@9.11.0","@mattermost/client@9.11.0"],"database_specific":{"source":"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2025-27715.json"}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:L/I:L/A:N"}]}