{"action":"No fix published. Pin and monitor.","affected":[{"introduced":"0"}],"component":"github.com/mattermost/mattermost-server","cve_ids":["CVE-2026-27769"],"ecosystem":"Go","epss":0.00167,"exploited":false,"fixed_versions":[],"ghsa_id":"GHSA-mxxh-fmjq-j6x4","id":"tcs_01M5KGMZMB09T8ACNDJS3GJX9J","modified_at":"2026-06-25T23:01:31.638503820Z","published_at":"2026-06-25T22:34:34Z","references":["https://osv.dev/vulnerability/GO-2026-5522","https://github.com/advisories/GHSA-mxxh-fmjq-j6x4","https://nvd.nist.gov/vuln/detail/CVE-2026-27769","https://mattermost.com/security-updates"],"severity":{"label":"unknown"},"sources":[{"source":"osv","source_id":"GO-2026-5522","url":"https://osv.dev/vulnerability/GO-2026-5522"}],"summary":"Mattermost doesn't validate whether users were correctly owned by the correct Connected Workspace in github.com/mattermost/mattermost-server"}