CVE-2026-96660 User Registration & Membership - Stored XSS

User Registration & Membership WordPress plugin <= 5.2.8 contains a stored cross-site scripting caused by insufficient input sanitization and output escaping in checkbox field value, letting unauthenticated attackers inject scripts executed on page access, exploit requires unauthenticated AJAX requests without nonce validation.

CVSS base score 7.2 /10
High
CISA KEV
Not listed
Public exploit
None known
Authentication
Not required
EPSS
0.23% chance of exploitation in 30 days
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