What the vulnerability does
01Description
The Events Calendar Pro plugin for WordPress is vulnerable to PHP Object Injection in all versions up to, and including, 7.0.2 via deserialization of untrusted input from the 'filters' parameter in widgets. This makes it possible for authenticated attackers, with administrator-level access and above, to inject a PHP Object. The additional presence of a POP chain allows attackers to execute code remotely. In certain configurations, this can be exploitable by lower level users. We confirmed that this plugin installed with Elementor makes it possible for users with contributor-level access and above to exploit this issue.
Explanation of Vulnerability in Simple Terms
02Summary
The Events Calendar Pro versions up to 7.0.2 contain a deserialization vulnerability in how they process untrusted data. An authenticated administrator can craft malicious input that causes the plugin to deserialize and execute arbitrary code on the site. This requires high-level admin access but can lead to complete site compromise, including data theft and malware installation.
What an attacker can do
03Attacker Capabilities
Run arbitrary code on the site with full administrative privileges.
Potential impact on your site
04Site Impact
A compromised admin account can install malware, steal data, or take the site offline.
Conditions required to exploit
05Prerequisites
Attacker must have administrator-level access to the WordPress site.
Key dates
06Disclosure timeline
August 30, 2024
CVE published
April 8, 2026
Record updated
