CVE-2026-84068 in WP Plugin
Summary
by MITRE • 09/09/2026
The Quentn WP WordPress plugin before 1.2.15 does not adequately escape a request parameter before using it in an unprepared SQL query, allowing unauthenticated attackers to extract arbitrary data from the database via SQL injection.
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Analysis
by VulDB Data Team • 09/09/2026
The vulnerability identified within the Quentn WP WordPress plugin prior to version 1.2.15 represents a critical security flaw rooted in improper input validation and sanitization practices. Specifically, the application fails to adequately escape user-supplied request parameters before incorporating them into SQL queries that are executed without the use of prepared statements or parameterized queries. This architectural deficiency creates an opening for unauthenticated attackers to manipulate the structure of database commands, effectively bypassing intended access controls and data isolation boundaries inherent in the WordPress environment.
From a technical perspective, this flaw is classified under CWE-89, which denotes Improper Neutralization of Special Elements used in an SQL Command, commonly known as SQL Injection. The absence of prepared statements means that user input is concatenated directly into the query string rather than being treated strictly as data. Consequently, if an attacker supplies a maliciously crafted payload containing SQL syntax, such as UNION-based injection or boolean-based blind techniques, the database engine interprets these inputs as executable commands rather than literal values. This allows for the extraction of arbitrary data from the underlying MySQL database, including sensitive user credentials, personal identifiable information stored in WordPress tables, and potentially administrative configuration details that could facilitate further compromise of the hosting environment.
The operational impact of this vulnerability is severe due to its unauthenticated nature. Attackers do not require valid login credentials or any form of authentication to exploit this flaw, significantly lowering the barrier for entry. This characteristic aligns with ATT&CK technique T1059, Command and Scripting Interpreter, specifically when used in conjunction with database interaction techniques like T1213, Data from Information Repositories. The ability to extract arbitrary data can lead to full account takeover if password hashes are retrieved and cracked, or it may result in significant reputational damage and regulatory penalties under frameworks such as GDPR due to the exposure of personal user data. Furthermore, depending on the database configuration and privileges granted to the WordPress application user, this vulnerability could potentially be chained with other flaws to achieve remote code execution, although the primary risk remains unauthorized data access.
Mitigation strategies must prioritize immediate remediation through software updates. Administrators running versions of Quentn WP earlier than 1.2.15 should upgrade to the latest patched version immediately to resolve this issue at the source code level. In scenarios where an update cannot be applied instantly, temporary mitigations include implementing a Web Application Firewall rule set designed to detect and block common SQL injection patterns in HTTP request parameters. Additionally, enforcing strict input validation on all entry points that interact with database queries is essential for long-term security hygiene. Developers should adopt the practice of using prepared statements or ORM frameworks that automatically handle parameterization, ensuring that user inputs are always treated as data rather than executable code, thereby neutralizing this class of vulnerabilities fundamentally.