AI24762 Vulnerability: Overview, Impact & Mitigation Guide

Understanding CVE-2021-24762: The Critical WordPress Plugin Vulnerability

In the vast ecosystem of web development and content management systems, security is an ongoing cat-and-mouse game. While core platforms like WordPress invest heavily in rigid security frameworks, third-party extensions often introduce unexpected risks. Among the countless identifiers tracked by cybersecurity professionals, CVE-2021-24762 (frequently referenced in technical shorthand or alphanumeric logs as ai24762) stands out as a stark reminder of how a single unvalidated parameter can compromise an entire database.

What is CVE-2021-24762?

CVE-2021-24762 is a critical SQL Injection (SQLi) vulnerability discovered in the Perfect Survey plugin for WordPress, specifically impacting versions prior to 1.5.2.

The flaw originates in how the plugin processes backend asynchronous requests. When handling specific AJAX actions (get_question), the software takes the question_id GET parameter directly from HTTP requests without implementing proper input validation, sanitization, or escaping. This raw input is then concatenated straight into the plugin’s SQL statements.

Key Technical Metrics:

• Attack Type: SQL Injection (SQLi)
• CVSS Severity Score: 9.8 (Critical)
• Authentication Requirement: None (Unauthenticated remote attackers can execute it over a network)
• Primary Impact: Full database compromise, exposure of sensitive user credentials, and extraction of private personal information.

How the Attack Vector Works

Because WordPress utilizes public AJAX endpoints (such as /wp-admin/admin-ajax.php) to handle frontend-to-backend communication, plugins must explicitly verify who is sending data and what that data contains.