Bold Page Builder <= 3.1.5 - PHP Object Injection

Deserialization of Untrusted Data
CVE CVE-2021-24579
CVSS 7.5 (High)
Publicly Published August 2, 2021
Last Updated January 22, 2024
Researcher dc11


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.



Vulnerability Details for Bold Page Builder

Software Type Plugin
Software Slug bold-page-builder (view on
Patched? Yes
Remediation Update to version 3.1.6, or a newer patched version
Affected Version
  • <= 3.1.5
Patched Version
  • 3.1.6

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