CVE-2021-39203: WordPress

Medium severity, CVSS 6.5. EPSS: 0.9% chance of exploitation in the next 30 days.

WordPress is a free and open-source content management system written in PHP and paired with a MySQL or MariaDB database. In affected versions authenticated users who don't have permission to view private post types/data can bypass restrictions in the block editor under certain conditions. This affected WordPress 5.8 beta during the testing period. It's fixed in the final 5.8 release.

Affected products

• WordPress WordPress: version 5.8 only

Published 2021-09-09. Last modified 2026-06-17.