{"action":"Upgrade getgrav/grav to 1.8.0-beta.27 or later.","affected":[{"fixed":"1.8.0-beta.27","introduced":"0"}],"component":"getgrav/grav","cve_ids":["CVE-2025-66309"],"ecosystem":"Packagist","epss":0.00231,"exploited":false,"fixed_versions":["1.8.0-beta.27"],"ghsa_id":"GHSA-65mj-f7p4-wggq","id":"tcs_01M5KEWP7CNT0T5KF08BBNDTX4","modified_at":"2026-09-10T03:50:31.650155510Z","published_at":"2025-12-02T01:24:45Z","references":["https://osv.dev/vulnerability/GHSA-65mj-f7p4-wggq","https://github.com/getgrav/grav/security/advisories/GHSA-65mj-f7p4-wggq","https://nvd.nist.gov/vuln/detail/CVE-2025-66309","https://github.com/getgrav/grav-plugin-admin/commit/99f653296504f1d6408510dd2f6f20a45a26f9b0","https://github.com/getgrav/grav"],"severity":{"label":"medium","score":6.1},"sources":[{"source":"osv","source_id":"GHSA-65mj-f7p4-wggq","url":"https://osv.dev/vulnerability/GHSA-65mj-f7p4-wggq"},{"source":"nvd","source_id":"CVE-2025-66309","url":"https://nvd.nist.gov/vuln/detail/CVE-2025-66309"}],"summary":"Grav is vulnerable to Cross-Site Scripting (XSS) Reflected endpoint /admin/pages/[page], parameter data[header][content][items], located in the \"Blog Config\" tab"}