Vulnerability Details CVE-2021-39202
WordPress is a free and open-source content management system written in PHP and paired with a MySQL or MariaDB database. In affected versions the widgets editor introduced in WordPress 5.8 beta 1 has improper handling of HTML input in the Custom HTML feature. This leads to stored XSS in the custom HTML widget. This has been patched in WordPress 5.8. It was only present during the testing/beta phase of WordPress 5.8.
Exploit prediction scoring system (EPSS) score
EPSS Score 0.008
EPSS Ranking 73.1%
CVSS Severity
CVSS v3 Score 7.6
CVSS v2 Score 3.5
References