{"action":"Upgrade concrete5/concrete5 to 9.5.1 or later.","affected":[{"fixed":"9.5.1","introduced":"9.0.0RC1"}],"component":"concrete5/concrete5","cve_ids":["CVE-2026-8409"],"ecosystem":"Packagist","epss":0.00142,"exploited":false,"fixed_versions":["9.5.1"],"ghsa_id":"GHSA-56c9-xq5g-xrf9","id":"tcs_01M5KEVNVZQYKR5CRE78837671","modified_at":"2026-09-10T03:51:04.579192908Z","published_at":"2026-05-22T00:31:17Z","references":["https://osv.dev/vulnerability/GHSA-56c9-xq5g-xrf9","https://nvd.nist.gov/vuln/detail/CVE-2026-8409","https://documentation.concretecms.org/9-x/developers/introduction/version-history/951-release-notes","https://github.com/concretecms/concretecms"],"severity":{"label":"high","score":8.8},"sources":[{"source":"osv","source_id":"GHSA-56c9-xq5g-xrf9","url":"https://osv.dev/vulnerability/GHSA-56c9-xq5g-xrf9"},{"source":"nvd","source_id":"CVE-2026-8409","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-8409"}],"summary":"Concrete CMS is vulnerable to Cross Site Request Forgery (CSRF) at concrete/controllers/dialog/logs/delete"}