{"schema_version":"1.7.3","id":"GHSA-cw7q-5cgc-h3h9","published":"2025-03-21T09:30:35Z","modified":"2025-03-28T08:46:15.998314Z","aliases":["BIT-mattermost-2025-27715","CVE-2025-27715","GO-2025-3555"],"summary":"Mattermost fail to prompt for explicit approval before adding a team admin to a private channel","details":"Mattermost versions 9.11.x <= 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.","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":"9.11.0"},{"fixed":"9.11.9"}]}],"database_specific":{"source":"https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2025/03/GHSA-cw7q-5cgc-h3h9/GHSA-cw7q-5cgc-h3h9.json"}}],"references":[{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2025-27715"},{"type":"PACKAGE","url":"https://github.com/mattermost/mattermost"},{"type":"WEB","url":"https://mattermost.com/security-updates"}],"database_specific":{"cwe_ids":["CWE-863"],"github_reviewed":true,"github_reviewed_at":"2025-03-21T22:38:08Z","nvd_published_at":"2025-03-21T09:15:13Z","severity":"LOW"},"severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:L/I:L/A:N"}]}