CVE-2026-77790 in RegistrationMagic Plugin
Summary
by MITRE • 08/26/2026
The RegistrationMagic WordPress plugin before 6.0.9.4 does not sanitise and escape a parameter before using it in a SQL statement, which could allow high privilege users such as admin to perform SQL injection attacks.
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Analysis
by VulDB Data Team • 08/26/2026
RegistrationMagic is a widely utilized WordPress plugin designed to facilitate the creation of complex forms for user registration, data collection, and payment processing within content management systems. The vulnerability identified in versions prior to 6.0.9.4 stems from an insufficient sanitization and escaping mechanism applied to specific input parameters before they are incorporated into database queries. This flaw represents a classic instance of SQL injection, where untrusted data is treated as part of the command or query structure rather than as passive data. In this context, the application fails to properly validate or encode user-supplied input, allowing an attacker to manipulate the intended logic of the SQL statement executed by the backend database management system.
The technical nature of this flaw involves a failure in input validation and output encoding practices that are critical for secure software development. When the plugin processes form submissions or other interactive elements managed through its interface, it constructs dynamic SQL queries using direct concatenation or interpolation of user inputs without applying necessary escaping functions such as those provided by WordPress's $wpdb class methods like prepare(). This oversight means that special characters within the input can alter the syntax of the SQL command. For example, an attacker could inject malicious code fragments that close existing query clauses and append new commands, thereby gaining unauthorized access to or modification of the database contents.
Although this vulnerability is classified as exploitable by high-privilege users such as administrators, it remains a significant security risk due to the principle of least privilege and the potential for internal threats or compromised accounts. An administrator account might be targeted through social engineering attacks, cross-site scripting vulnerabilities that steal session cookies, or other vectors that lead to credential compromise. Once an attacker gains administrative access, they can exploit this SQL injection flaw to extract sensitive data from the WordPress database, including user credentials, personal information stored in form submissions, and potentially site configuration details. The impact extends beyond simple data theft; successful exploitation could allow for unauthorized modification of site content or even complete system takeover if combined with other vulnerabilities that leverage extracted database privileges.
From a classification perspective, this vulnerability aligns with CWE-89, which describes Improper Neutralization of Special Elements used in an SQL Command commonly known as SQL Injection. It also relates to the MITRE ATT&CK framework under techniques involving Database Query Manipulation and potentially Data Exfiltration depending on the specific payload executed by the attacker. The presence of such a flaw indicates gaps in the plugin's code review process regarding secure coding standards, particularly concerning the handling of dynamic queries that interact with persistent storage layers.
To mitigate this vulnerability, immediate action is required to update the RegistrationMagic plugin to version 6.0.9.4 or later, where these input validation and escaping mechanisms have been corrected by the developers. Site administrators should verify their current plugin versions through the WordPress dashboard and apply updates promptly upon release. Additionally, implementing a Web Application Firewall can provide an additional layer of defense by detecting and blocking common SQL injection patterns in HTTP requests before they reach the application logic. Regular security audits and code reviews focusing on database interaction layers are recommended to prevent similar issues in future development cycles or other plugins used within the same environment.