XSS in Wpeverest User Registration & Membership – Free Paid Memberships, Subscriptions, Content Restriction, Profile, Custom Login Builder

CVE-2026-96660

The User Registration & Membership – Free & Paid Memberships, Subscriptions, Content Restriction, User Profile, Custom User Registration & Login Builder plugin for WordPress is vulnerable to Stored Cross-Site Scripting via Checkbox Field Value in all versions up to, and including, 5.2.8 due to insufficient input sanitization and output escaping. This makes it possible for unauthenticated attackers to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page. The nopriv AJAX action user_registration_user_form_submit reaches ur_process_registration() without nonce validation, meaning any unauthenticated request can reach the vulnerable code path.

Vulnerability class: XSS (Cross-Site Scripting)

Published .

CVSS v3 metric

CVSS v3 base score 7.2 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N.

EPSS exploit prediction

No EPSS score from FIRST.org yet. New CVEs usually get one within a few days; no score means no signal yet, not low risk. How EPSS works.

Affected products

Weakness classification (CWE)

References

Frequently asked questions

What is CVE-2026-96660?
CVE-2026-96660 is a high-severity vulnerability in Wpeverest User Registration & Membership – Free Paid Memberships, Subscriptions, Content Restriction, Profile, Custom Login Builder, classified under Cross-site Scripting. CVSS score: 7.2/10. Published 2026-10-17.
How severe is CVE-2026-96660?
High severity. CVSS v3 base score is 7.2 out of 10.