CVE-2021-24579: Bold-Themes Bold Page Builder

High severity, CVSS 8.8. EPSS: 8.2% chance of exploitation in the next 30 days.

The bt_bb_get_grid AJAX action of the Bold Page Builder WordPress plugin before 3.1.6 passes user input into the unserialize() function without any validation or sanitisation, which could lead to a PHP Object Injection. Even though the plugin did not contain a suitable gadget to fully exploit the issue, other installed plugins on the blog could allow such issue to be exploited and lead to RCE in some cases.

Affected products

• Bold-Themes Bold Page Builder: before 3.1.6 (fixed in 3.1.6)

Published 2021-08-30. Last modified 2026-06-17.