Event Monster <= 1.4.0 - Authenticated(Contributor+) PHP Object Injection via Custom Meta

Deserialization of Untrusted Data
CVE CVE-2024-1895
CVSS 7.5 (High)
Publicly Published April 29, 2024
Last Updated June 14, 2024
Researcher Francesco Carlucci


The Event Monster – Event Management, Tickets Booking, Upcoming Event plugin for WordPress is vulnerable to PHP Object Injection in all versions up to, and including, 1.4.0 via deserialization via shortcode of untrusted input from a custom meta value. This makes it possible for authenticated attackers, with contributor access and above, to inject a PHP Object. No POP chain is present in the vulnerable plugin. 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.



Vulnerability Details for Event Monster – Event Management, Tickets Booking, Upcoming Event

Software Type Plugin
Software Slug event-monster (view on wordpress.org)
Patched? No
Remediation No known patch available. Please review the vulnerability's details in depth and employ mitigations based on your organization's risk tolerance. It may be best to uninstall the affected software and find a replacement.
Affected Version
  • <= 1.4.0

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