{"id":"GHSA-vph7-r229-qxpf","revision":"4d2c5827959c4903bc12699f08c2653b","records":[{"revision":"4d2c5827959c4903bc12699f08c2653b","observedAt":"2026-10-24T13:19:41.952+00:00","statement":{"source":"osv","id":"GHSA-vph7-r229-qxpf","aliases":["CVE-2026-28736","GO-2026-5670"],"title":"Focalboard doesn't validate file ownership when serving uploaded files","description":"** UNSUPPORTED WHEN ASSIGNED ** Focalboard version 8.0 fails to validate file ownership when serving uploaded files. This allows an authenticated attacker who knows a victim's fileID to read the content of the file. NOTE: Focalboard as a standalone product is not maintained and no fix will be issued.","state":0,"publishedAt":"2026-04-03T15:30:31+00:00","modifiedAt":"2026-06-25T23:11:35.9028271+00:00","affected":[{"ecosystem":"Go","name":"github.com/mattermost/focalboard","ranges":[{"type":"SEMVER","events":[{"kind":"introduced","version":"0"},{"kind":"last_affected","version":"7.10.6"}]}],"versions":[],"rawVersionEvidence":null}],"metrics":[{"system":"CVSS_V3","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N","score":null,"severity":null},{"system":"Publisher rating","vector":null,"score":null,"severity":"MODERATE"}],"references":["https://nvd.nist.gov/vuln/detail/CVE-2026-28736","https://github.com/mattermost-community/focalboard"],"sourceUrl":"https://github.com/advisories/GHSA-vph7-r229-qxpf","license":"GitHub Advisory Database · CC-BY-4.0","key":"osv:GHSA-vph7-r229-qxpf","identifiers":["GHSA-vph7-r229-qxpf","CVE-2026-28736","GO-2026-5670"]},"retained":false,"historicalAffected":[]}],"coverage":[]}