{"action":"Upgrade concrete5/concrete5 to 9.5.2 or later.","affected":[{"fixed":"9.5.2","introduced":"0"}],"component":"concrete5/concrete5","cve_ids":["CVE-2026-10721"],"ecosystem":"Packagist","epss":0.00146,"exploited":false,"fixed_versions":["9.5.2"],"ghsa_id":"GHSA-g82f-9pw7-773w","id":"tcs_01M5KF2FMYJARPXTKHN6BBBWCJ","modified_at":"2026-08-12T23:40:59.956065Z","published_at":"2026-06-10T09:31:57Z","references":["https://osv.dev/vulnerability/GHSA-g82f-9pw7-773w","https://nvd.nist.gov/vuln/detail/CVE-2026-10721","https://documentation.concretecms.org/9-x/developers/introduction/version-history/952-release-notes","https://github.com/concretecms/concretecms"],"severity":{"label":"high","score":8.4},"sources":[{"source":"osv","source_id":"GHSA-g82f-9pw7-773w","url":"https://osv.dev/vulnerability/GHSA-g82f-9pw7-773w"},{"source":"nvd","source_id":"CVE-2026-10721","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-10721"}],"summary":"Concrete CMS: PHP Object Injection via unserialize() calls"}