CVE-2026-66565CRITICAL NVDCVSS Score 9.8Severity CRITICALPublished Oct 10, 2026Vendor unknownDescriptionUnauthenticated PHP Object Injection in FC United <= 1.1.1 versions.Referenceshttps://patchstack.com/database/wordpress/theme/fcunited/vulnerability/wordpress-fc-united-theme-1-1-1-php-object-injection-vulnerability?_s_id=cve