RSVPMaker <= 10.6.6 - Unauthenticated PHP Object Injection

Deserialization of Untrusted Data
CVE CVE-2023-25054
CVSS 9.8 (Critical)
Publicly Published September 5, 2023
Last Updated September 7, 2023
Researcher Ravi Dharmawan


The RSVPMaker plugin for WordPress is vulnerable to PHP Object Injection in versions up to, and including, 10.6.6 via deserialization of untrusted input from the $details variable. This allows unauthenticated attackers 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 RSVPMaker

Software Type Plugin
Software Slug rsvpmaker (view on
Patched? Yes
Remediation Update to version 10.6.7, or a newer patched version
Affected Version
  • <= 10.6.6
Patched Version
  • 10.6.7

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