{"action":"Upgrade concrete5/concrete5 to 9.5.1 or later.","affected":[{"fixed":"9.5.1","introduced":"0"}],"component":"concrete5/concrete5","cve_ids":["CVE-2026-8203"],"ecosystem":"Packagist","epss":0.00122,"exploited":false,"fixed_versions":["9.5.1"],"ghsa_id":"GHSA-9v2g-37mp-qpxf","id":"tcs_01M5KF09VKQ0Z4VHMP9EQD1P6K","modified_at":"2026-09-10T03:50:46.586363418Z","published_at":"2026-05-21T21:30:38Z","references":["https://osv.dev/vulnerability/GHSA-9v2g-37mp-qpxf","https://nvd.nist.gov/vuln/detail/CVE-2026-8203","https://documentation.concretecms.org/9-x/developers/introduction/version-history/951-release-notes","https://github.com/concretecms/concretecms"],"severity":{"label":"medium","score":5.4},"sources":[{"source":"osv","source_id":"GHSA-9v2g-37mp-qpxf","url":"https://osv.dev/vulnerability/GHSA-9v2g-37mp-qpxf"},{"source":"nvd","source_id":"CVE-2026-8203","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-8203"}],"summary":"Concrete CMS has Stored XSS through its height parameter"}