{"action":"No fix published. Pin and monitor.","affected":[{"introduced":"0"}],"component":"github.com/mattermost/focalboard","cve_ids":["CVE-2026-28736"],"ecosystem":"Go","epss":0.0023,"exploited":false,"fixed_versions":[],"ghsa_id":"GHSA-vph7-r229-qxpf","id":"tcs_01M5KGP1T2TR4Y1Q8XXPD5WG3Q","modified_at":"2026-06-25T23:01:38.778614136Z","published_at":"2026-06-25T22:34:38Z","references":["https://osv.dev/vulnerability/GO-2026-5670","https://github.com/advisories/GHSA-vph7-r229-qxpf","https://nvd.nist.gov/vuln/detail/CVE-2026-28736"],"severity":{"label":"medium","score":4.3},"sources":[{"source":"osv","source_id":"GO-2026-5670","url":"https://osv.dev/vulnerability/GO-2026-5670"},{"source":"nvd","source_id":"CVE-2026-28736","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-28736"}],"summary":"Focalboard doesn't validate file ownership when serving uploaded files in github.com/mattermost/focalboard"}