CVE-2025-15027: Jayarsiech Jay Login & Register

Critical severity, CVSS 9.8. EPSS: 0.5% chance of exploitation in the next 30 days.

The JAY Login & Register plugin for WordPress is vulnerable to Privilege Escalation in all versions up to, and including, 2.6.03. This is due to the plugin allowing a user to update arbitrary user meta through the 'jay_login_register_ajax_create_final_user' function. This makes it possible for unauthenticated attackers to elevate their privileges to that of an administrator.

Affected products

• Jayarsiech Jay Login & Register: up to and including 2.6.03

Published 2026-02-08. Last modified 2026-06-17.