What the vulnerability does
01Description
The Flipbox Builder plugin for WordPress is vulnerable to PHP Object Injection in all versions up to, and including, 1.5 via deserialization of untrusted input in the flipbox_builder_Flipbox_ShortCode function. This makes it possible for authenticated attackers, with Contributor-level access and above, to inject a PHP Object. No known POP chain is present in the vulnerable software. If a POP chain is present via an additional plugin or theme installed on the target system, it could allow the attacker to delete arbitrary files, retrieve sensitive data, or execute code.
Explanation of Vulnerability in Simple Terms
02Summary
Flipbox Builder versions 1.5 and earlier contain a deserialization vulnerability that allows authenticated users to execute arbitrary code on the site. An attacker with low-level access can craft malicious serialized data to trigger code execution. This affects all installations running the vulnerable version range.
What an attacker can do
03Attacker Capabilities
Run arbitrary code on the site with the privileges of the web server.
Potential impact on your site
04Site Impact
Complete site compromise possible; attacker can modify content, steal data, or install backdoors.
Conditions required to exploit
05Prerequisites
Attacker must have a low-level user account (e.g., subscriber or contributor role).
Key dates
06Disclosure timeline
July 27, 2024
CVE published
April 8, 2026
Record updated
