CVE-2026-2468 in Quentn WP Plugin
Summary
by MITRE • 03/21/2026
The Quentn WP plugin for WordPress is vulnerable to SQL Injection via the 'qntn_wp_access' cookie in all versions up to, and including, 1.2.12. This is due to insufficient escaping on the user supplied parameter and lack of sufficient preparation on the existing SQL query in the `get_user_access()` method. This makes it possible for unauthenticated attackers to append additional SQL queries into already existing queries that can be used to extract sensitive information from the database.
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Analysis
by VulDB Data Team • 03/21/2026
The Quentn WP plugin represents a significant security vulnerability classified as CVE-2026-2468, which affects all versions up to and including 1.2.12 within the WordPress ecosystem. This vulnerability manifests through a critical SQL injection flaw that exploits the 'qntn_wp_access' cookie parameter, creating a pathway for malicious actors to manipulate database queries without authentication. The flaw resides specifically within the get_user_access() method where insufficient input validation and sanitization allows attackers to inject malicious SQL code into existing database operations. This vulnerability directly maps to CWE-89 which categorizes SQL injection flaws as weaknesses in software that allows attackers to execute arbitrary SQL commands against a database.
The technical exploitation of this vulnerability occurs when an attacker manipulates the qntn_wp_access cookie value to inject additional SQL commands into the existing query structure. The plugin fails to properly escape or prepare user-supplied parameters before incorporating them into database queries, creating a condition where attacker-controlled input can alter the intended execution flow of SQL statements. This lack of proper input sanitization means that malicious SQL fragments can be appended to legitimate database operations, potentially allowing attackers to extract sensitive information from the WordPress database. The vulnerability's impact extends beyond simple data extraction as it could enable full database compromise and unauthorized access to user credentials, personal information, and other sensitive data stored within the WordPress installation.
The operational impact of this vulnerability is severe for any WordPress site utilizing the affected Quentn WP plugin version. Unauthenticated attackers can leverage this weakness to perform unauthorized database queries without requiring valid user credentials or session tokens. This creates a significant risk for websites that store sensitive user information, including personal details, login credentials, or business-critical data within their WordPress database. The vulnerability's persistence across multiple versions indicates a fundamental flaw in the plugin's security implementation that affects a wide range of installations. Organizations relying on this plugin face potential data breaches, regulatory compliance violations, and reputational damage if the vulnerability remains unpatched. The attack surface is particularly concerning given that the vulnerability operates at the database level, making it difficult to detect through standard network monitoring or application firewalls.
Mitigation strategies for this vulnerability require immediate action including patching to the latest available version of the Quentn WP plugin where the SQL injection flaw has been addressed. System administrators should also implement additional defensive measures such as monitoring for unusual database query patterns and implementing web application firewalls that can detect and block malicious SQL injection attempts. Regular security audits of WordPress plugins and themes should be conducted to identify similar vulnerabilities in other third-party components. The vulnerability highlights the importance of proper input validation and parameterized queries as recommended by the OWASP Top Ten and ATT&CK framework techniques related to command injection and credential access. Organizations should also consider implementing database query logging and access controls to limit the potential impact of such vulnerabilities, while maintaining up-to-date security practices including regular plugin updates and comprehensive security testing procedures.