{"action":"Upgrade concrete5/concrete5 to 9.5.1 or later.","affected":[{"fixed":"9.5.1","introduced":"0"}],"component":"concrete5/concrete5","cve_ids":["CVE-2026-8240"],"ecosystem":"Packagist","epss":0.00195,"exploited":false,"fixed_versions":["9.5.1"],"ghsa_id":"GHSA-vpgr-cwfx-pwfw","id":"tcs_01M5KF9A0HBM6GNWNZ04TA4G27","modified_at":"2026-09-10T03:51:07.111290297Z","published_at":"2026-05-22T00:31:16Z","references":["https://osv.dev/vulnerability/GHSA-vpgr-cwfx-pwfw","https://nvd.nist.gov/vuln/detail/CVE-2026-8240","https://documentation.concretecms.org/9-x/developers/introduction/version-history/951-release-notes","https://github.com/concretecms/concretecms"],"severity":{"label":"medium","score":5.3},"sources":[{"source":"osv","source_id":"GHSA-vpgr-cwfx-pwfw","url":"https://osv.dev/vulnerability/GHSA-vpgr-cwfx-pwfw"},{"source":"nvd","source_id":"CVE-2026-8240","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-8240"}],"summary":"Concrete CMS is vulnerable to unauthenticated page metadata disclosure"}