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CVE-2017-20208

CRITICAL 9.8 CVSS 3.1
Published
October 18, 2025
Last modified
June 17, 2026
NVD status
Analyzed
Reported by
security@wordfence.com
Weakness
CWE-502
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Description

The RegistrationMagic – Custom Registration Forms, User Registration, Payment, and User Login plugin for WordPress is vulnerable to PHP Object Injection in all versions up to 3.7.9.3 (exclusive) via deserialization of untrusted input from the is_expired_by_date() function. This makes it possible for unauthenticated attackers to inject a PHP Object. The additional presence of a POP chain allows attackers to fetch a remote file and install it on the site.

Affected WordPress components

  • RegistrationMagic – Custom Registration Forms, User Registration, Payment, and User Login Plugin · custom-registration-form-builder-with-submission-manager
    Confirmed match Active
    Before 3.7.9.3
    View on WordPress.org

A confirmed match is backed by the plugin or theme slug. A possible match is based on the product name only and should be verified.

Affected products and versions

  • metagauss RegistrationMagic – Custom Registration Forms, User Registration, Payment, and User Login — Before 3.7.9.3
  • metagauss registrationmagic — Before 3.7.9.3

References

  • plugins.trac.wordpress.org https://plugins.trac.wordpress.org/changeset/1733274/custom-registration-form-builder-with-submission-manager Patch
  • www.wordfence.com https://www.wordfence.com/blog/2017/10/3-zero-day-plugin-vulnerabilities-exploited-wild/ Press/Media Coverage, Third Party Advisory
  • www.wordfence.com https://www.wordfence.com/threat-intel/vulnerabilities/id/c2b79193-f8fc-4ea2-8973-fe292cfb926b?source=cve Technical Description
  • nvd.nist.gov Official NVD record