CVE-2025-47490 in Ultimate WP Mail Plugin
Summary
by MITRE • 05/07/2025
Improper Neutralization of Special Elements used in an SQL Command ('SQL Injection') vulnerability in Rustaurius Ultimate WP Mail allows SQL Injection. This issue affects Ultimate WP Mail: from n/a through 1.3.4.
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Analysis
by VulDB Data Team • 05/07/2025
The vulnerability identified as CVE-2025-47490 represents a critical SQL injection flaw within the Ultimate WP Mail plugin for WordPress systems. This vulnerability stems from improper neutralization of special elements in SQL commands, creating a pathway for malicious actors to execute unauthorized database operations. The flaw exists in the Rustaurius Ultimate WP Mail plugin and affects versions ranging from the initial release through version 1.3.4, indicating a prolonged period during which systems remained exposed to this security risk. The vulnerability classification aligns with CWE-89 which specifically addresses SQL injection conditions where user-supplied data is not properly sanitized before being incorporated into database queries.
The technical implementation of this vulnerability occurs when the plugin processes user input through web forms or API endpoints without adequate validation or sanitization of SQL query parameters. Attackers can exploit this weakness by injecting malicious SQL code through input fields that are subsequently processed by the plugin's database interaction functions. The attack vector typically involves manipulation of parameters that are directly concatenated into SQL statements rather than utilizing parameterized queries or prepared statements. This improper handling allows attackers to bypass authentication mechanisms, extract sensitive data from databases, modify or delete records, and potentially escalate privileges within the affected WordPress environment. The vulnerability's impact is particularly severe as it affects core database operations that are fundamental to WordPress functionality and user management.
The operational consequences of this vulnerability extend beyond simple data compromise, as successful exploitation can lead to complete system takeover of WordPress installations running the vulnerable plugin. Attackers can leverage SQL injection to access administrative accounts, modify website content, install backdoors, or exfiltrate sensitive information including user credentials, personal data, and business-critical information stored in the database. The widespread adoption of WordPress and its plugins means that systems utilizing the Ultimate WP Mail plugin are at significant risk, particularly in environments where multiple users have access to the website interface. The vulnerability's persistence across multiple versions suggests inadequate security review processes during plugin development, leaving administrators with limited options for protection beyond immediate patching or removal of the affected plugin.
Mitigation strategies for CVE-2025-47490 must prioritize immediate action to address the identified SQL injection vulnerability. The most effective approach involves upgrading to the latest version of the Ultimate WP Mail plugin where the vulnerability has been patched and proper input sanitization mechanisms have been implemented. Organizations should also implement additional defensive measures including web application firewalls that can detect and block malicious SQL injection attempts, database query logging to monitor for suspicious activity, and regular security audits of installed plugins. The implementation of parameterized queries and prepared statements should be enforced throughout the application codebase to prevent similar vulnerabilities in future development cycles. Security monitoring should include regular vulnerability scanning of WordPress installations to identify unpatched plugins and other potential attack vectors. Organizations should also consider implementing least privilege principles for database access and regular backup procedures to ensure rapid recovery in case of successful exploitation attempts. This vulnerability demonstrates the critical importance of proper input validation and the implementation of security-by-design principles in web application development.