Executive brief
Events Manager is a popular WordPress plugin used to manage event registrations and bookings. A security flaw in this plugin could allow an attacker to trick a site administrator into clicking a malicious link, potentially leading to full site takeover, data theft, or the deletion of website files. This vulnerability is considered high risk because it can be used in automated attacks against thousands of websites simultaneously.
Technical details
A Deserialization of Untrusted Data vulnerability (CWE-502) exists in the Events Manager plugin for WordPress through version 7.3.6. The flaw allows for PHP Object Injection, which occurs when user-supplied input is passed to the unserialize() function without proper validation. An unauthenticated attacker can exploit this by crafting a malicious payload and tricking a privileged user into performing an action, such as clicking a link (User Interaction required). If a suitable Property-Oriented Programming (POP) chain is present on the system, this can lead to remote code execution, SQL injection, or file system manipulation. The issue is resolved in version 7.3.7.
Affected products
- Marcus (aka @msykes) Events Manager through 7.3.6
Timeline
- 2026-06-23: disclosed: Reported by dutafi to Patchstack
- 2026-07-08: advisory: Patchstack published advisory
- 2026-07-13: advisory: NVD published CVE record
- 2026-07-08: patched: Version 7.3.7 released to address the issue