PHP Object Injection Vulnerability in RegistrationMagic Plugin for WordPress
CVE-2017-20208

9.8CRITICAL

Key Information:

Vendor

WordPress
Status
Registrationmagic – Custom Registration Forms, User Registration, Payment, And User Login
Vendor
CVE Published:
18 October 2025

What is CVE-2017-20208?

The RegistrationMagic plugin for WordPress is susceptible to a PHP Object Injection vulnerability through the deserialization of untrusted data in the is_expired_by_date() function. This vulnerability affects all versions before 3.7.9.3, allowing unauthenticated attackers to potentially inject a malicious PHP Object. The presence of a POP (PHP Object Injection) chain could enable attackers to retrieve remote files, further compromising the integrity of the affected site.

Affected Version(s)

RegistrationMagic – Custom Registration Forms, User Registration, Payment, and User Login * < 3.7.9.3

References

https://www.wordfence.com/threat-intel/vulnerabilities/id...
https://www.wordfence.com/blog/2017/10/3-zero-day-plugin-...
https://plugins.trac.wordpress.org/changeset/1733274/cust...

CVSS V3.1

Score:
9.8
Severity:
CRITICAL
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

Credit

Brad Haas
JSON
.
CVE-2017-20208 : PHP Object Injection Vulnerability in RegistrationMagic Plugin for WordPress