Description WordPress before 4.9.2 has XSS in the Flash fallback files in MediaElement (under wp-includes/js/mediaelement). Remediation References CVE-2018-5776 Related Vulnerabilities Liferay DXP External Control of System or Configuration Setting Vulnerability (CVE-2025-43792) PHP Integer Overflow or Wraparound Vulnerability (CVE-2016-10159) WordPress Plugin User Profile Builder-Beautiful User Registration Forms, User Profiles & User Role Editor Cross-Site Scripting (3.4.7) WordPress Plugin wp-microblogs Cross-Site Scripting (0.4.0) OpenSSL CVE-2023-4807 Vulnerability (CVE-2023-4807) Severity Medium Classification CVE-2018-5776 CWE-707 CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N Tags Missing Update Known Vulnerabilities