Description

The User Registration & Membership plugin for WordPress is vulnerable to Open Redirect in versions up to and including 5.1.4. This is due to insufficient validation of user-supplied URLs passed via the 'redirect_to_on_logout' GET parameter before redirecting users. The `redirect_to_on_logout` GET parameter is passed directly to WordPress's `wp_redirect()` function instead of the domain-restricted `wp_safe_redirect()`. While `esc_url_raw()` is applied to sanitize malformed URLs, it does not restrict the redirect destination to the local domain, allowing an attacker to craft a specially formed link that redirects users to potentially malicious external URLs after logout, which could be used to facilitate phishing attacks.

INFO

Published Date :

2026-04-13T22:25:54.316Z

Last Modified :

2026-04-14T14:04:53.123Z

Source :

Wordfence
AFFECTED PRODUCTS

The following products are affected by CVE-2026-6203 vulnerability.

Vendors Products
Wordpress
  • Wordpress
Wpeverest
  • User Registration & Membership – Free & Paid Memberships, Subscriptions, Content Restriction, User Profile, Custom User Registration & Login Builder
REFERENCES

Here, you will find a curated list of external links that provide in-depth information to CVE-2026-6203.

URL Resource
https://plugins.trac.wordpress.org/browser/user-registration/tags/5.1.4/includes/functions-ur-template.php#L39 cve-icon cve-icon
https://plugins.trac.wordpress.org/browser/user-registration/trunk/includes/functions-ur-template.php#L39 cve-icon cve-icon
https://www.wordfence.com/threat-intel/vulnerabilities/id/020bed37-9544-49b7-941d-3b7f509fdfdf?source=cve cve-icon cve-icon
Login to claim this CVE

CVSS Vulnerability Scoring System

Detailed values of each vector for above chart.
Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality Impact
Integrity Impact
Availability Impact