{"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-2025-66310"],"ecosystem":"Packagist","epss":0.00214,"exploited":false,"fixed_versions":["1.8.0-beta.27"],"ghsa_id":"GHSA-7g78-5g5g-mvfj","id":"tcs_01M5KEY22ZAVMG4XM21SJFV3XC","modified_at":"2026-09-10T03:50:31.731770861Z","published_at":"2025-12-02T01:24:56Z","references":["https://osv.dev/vulnerability/GHSA-7g78-5g5g-mvfj","https://github.com/getgrav/grav/security/advisories/GHSA-7g78-5g5g-mvfj","https://nvd.nist.gov/vuln/detail/CVE-2025-66310","https://github.com/getgrav/grav-plugin-admin/commit/99f653296504f1d6408510dd2f6f20a45a26f9b0","https://github.com/getgrav/grav"],"severity":{"label":"medium","score":5.4},"sources":[{"source":"osv","source_id":"GHSA-7g78-5g5g-mvfj","url":"https://osv.dev/vulnerability/GHSA-7g78-5g5g-mvfj"},{"source":"nvd","source_id":"CVE-2025-66310","url":"https://nvd.nist.gov/vuln/detail/CVE-2025-66310"}],"summary":"Grav vulnerable to Cross-Site Scripting (XSS) Stored endpoint `/admin/pages/[page]` parameter `data[header][template]` in Advanced Tab"}