What’s Vulnerable › Vulnerabilities

CVE-2025-3282: User Registration & Membership – Custom Registration Form, Login Form, and User Profile <= 4.1.3 - Insecure Direct Object Reference to Unauthenticated Membership Modification

• Severity: medium (CVSS 5.3 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.3% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2025-04-12 · updated 2026-06-17
• Weakness: CWE-639

Description

The User Registration & Membership – Custom Registration Form, Login Form, and User Profile plugin for WordPress is vulnerable to Insecure Direct Object Reference in all versions up to, and including, 4.1.3 via the user_registration_membership_register_member() due to missing validation on the 'membership_id' user controlled key. This makes it possible for unauthenticated attackers to update any user's membership to any other active or non-active membership type.

Affected products

• User Registration & Membership: before 4.1.4 — fixed in 4.1.4

How to fix

Upgrade to a fixed version: User Registration & Membership 4.1.4. Check the vendor advisory for mitigations.

References

• https://plugins.trac.wordpress.org/changeset/3268617/user-registration/trunk/modules/membership/includes/AJAX.php
• https://www.wordfence.com/threat-intel/vulnerabilities/id/c525b41c-dca5-442a-927e-4583cb303ed1?source=cve

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