What the vulnerability does
01Description
The Frontend Login and Registration Blocks plugin for WordPress is vulnerable to privilege escalation via account takeover in all versions up to, and including, 1.1.1. This is due to the plugin not properly validating a user's identity prior to updating their details like email via the flr_blocks_user_settings_handle_ajax_callback() function. This makes it possible for unauthenticated attackers to change arbitrary user's email addresses, including administrators, and leverage that to reset the user's password and gain access to their account.
Explanation of Vulnerability in Simple Terms
02Summary
The Login, Registration and Lost Password Blocks plugin for WordPress contains a vulnerability that allows unauthenticated attackers to read, modify, or delete data on affected sites. No user interaction or special configuration is required. All versions up to and including 1.1.1 are affected. Site administrators should update immediately to a patched version.
What an attacker can do
03Attacker Capabilities
Read, modify, or delete site data without authentication.
Potential impact on your site
04Site Impact
Attackers can compromise user data, modify site content, or disrupt site availability without logging in.
Conditions required to exploit
05Prerequisites
Network access only; no authentication or user interaction required.
Key dates
06Disclosure timeline
May 9, 2025
CVE published
April 8, 2026
Record updated
