{"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-2026-8434"],"ecosystem":"Packagist","epss":0.00196,"exploited":false,"fixed_versions":["9.5.1"],"ghsa_id":"GHSA-6qjh-p324-694f","id":"tcs_01M5KEXA00GMD85H9Z0X0RG2SA","modified_at":"2026-09-10T03:50:45.803053660Z","published_at":"2026-05-22T00:31:17Z","references":["https://osv.dev/vulnerability/GHSA-6qjh-p324-694f","https://nvd.nist.gov/vuln/detail/CVE-2026-8434","https://documentation.concretecms.org/9-x/developers/introduction/version-history/951-release-notes","https://github.com/concretecms/concretecms"],"severity":{"label":"low"},"sources":[{"source":"osv","source_id":"GHSA-6qjh-p324-694f","url":"https://osv.dev/vulnerability/GHSA-6qjh-p324-694f"}],"summary":"Concrete CMS is vulnerable to Cross Site Request Forgery (CSRF) at concrete/controllers/backend/file rescanMultiple()"}