CVE-2017-20208

CRITICAL EXPLOITED

RegistrationMagic <3.7.9.3 - Code Injection

Title source: llm

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.

References (3)

[Patch] https://plugins.trac.wordpress.org/changeset/1733274/custom-registration-form-builder-with-submission-manager

[Press/Media Coverage, Third Party Advisory] https://www.wordfence.com/blog/2017/10/3-zero-day-plugin-vulnerabilities-exploited-wild/

[Technical Description] https://www.wordfence.com/threat-intel/vulnerabilities/id/c2b79193-f8fc-4ea2-8973-fe292cfb926b?source=cve

Scores

CVSS v3 9.8

EPSS 0.0033

EPSS Percentile 55.8%

Attack Vector NETWORK

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Exploitation Intel

VulnCheck KEV 2017-10-02

Classification

CWE

CWE-502

Status published

Affected Products (1)

metagauss/registrationmagic < 3.7.9.3

Timeline

Published Oct 18, 2025

Tracked Since Feb 18, 2026