{"action":"Upgrade github.com/mattermost/mattermost/server/v8 to 8.0.0-20250520060012-d0380305ef7a or later.","affected":[{"fixed":"8.0.0-20250520060012-d0380305ef7a","introduced":"0"}],"component":"github.com/mattermost/mattermost/server/v8","cve_ids":["CVE-2025-3228"],"ecosystem":"Go","epss":0.00294,"exploited":false,"fixed_versions":["8.0.0-20250520060012-d0380305ef7a"],"ghsa_id":"GHSA-4578-6gjh-f2jm","id":"tcs_01M5KG92XPXPFH6ZEBRAEAG718","modified_at":"2026-03-03T04:57:20.979939Z","published_at":"2025-07-28T19:57:13Z","references":["https://osv.dev/vulnerability/GO-2025-3771","https://github.com/advisories/GHSA-4578-6gjh-f2jm","https://nvd.nist.gov/vuln/detail/CVE-2025-3228","https://mattermost.com/security-updates"],"severity":{"label":"medium","score":4.3},"sources":[{"source":"osv","source_id":"GO-2025-3771#Go/github.com/mattermost/mattermost/server/v8","url":"https://osv.dev/vulnerability/GO-2025-3771"},{"source":"nvd","source_id":"CVE-2025-3228","url":"https://nvd.nist.gov/vuln/detail/CVE-2025-3228"}],"summary":"Mattermost allows an unauthorized Guest user access to Playbook in github.com/mattermost/mattermost-server"}