CVE-2025-47490 is a high-severity SQL Injection vulnerability (CWE-89) found in the Rustaurius Ultimate WP Mail plugin for WordPress, affecting versions up to 1.3.4. The vulnerability arises from improper neutralization of special elements used in SQL commands, allowing an attacker with at least low privileges (PR:L) and no user interaction (UI:N) to execute malicious SQL queries remotely over the network (AV:N). The CVSS 3.1 base score of 8.5 reflects the critical confidentiality impact (C:H) with limited integrity (I:N) and low availability (A:L) impact. The vulnerability scope is changed (S:C), indicating that exploitation can affect resources beyond the vulnerable component, potentially impacting the entire WordPress installation or connected databases. Although no known exploits are currently in the wild, the ease of exploitation combined with the high confidentiality impact makes this a serious threat. The plugin Ultimate WP Mail is used to manage email functionalities within WordPress sites, and the vulnerability could allow attackers to extract sensitive data from the backend database, such as user credentials, email addresses, or other confidential information stored in the database. Given that WordPress is widely used across many European organizations for websites and internal portals, this vulnerability poses a significant risk if the plugin is deployed without patches or mitigations. The lack of available patches at the time of publication increases the urgency for organizations to implement compensating controls or monitor for suspicious activity.

For European organizations, the impact of CVE-2025-47490 can be substantial. Many businesses, government agencies, and non-profits in Europe rely on WordPress for their web presence and internal communications, often using plugins like Ultimate WP Mail to handle email notifications and contact forms. Successful exploitation could lead to unauthorized disclosure of sensitive personal data protected under GDPR, resulting in legal penalties and reputational damage. The confidentiality breach could expose customer information, employee data, or internal communications. Additionally, attackers could leverage the SQL Injection to pivot within the network or escalate privileges, potentially leading to further compromise. The limited impact on integrity and availability reduces the risk of data tampering or service disruption but does not eliminate the threat of data leakage. Organizations in Europe must consider the regulatory implications and the potential for targeted attacks exploiting this vulnerability, especially in sectors with high-value data such as finance, healthcare, and government.

1. Immediate review and removal or disabling of the Ultimate WP Mail plugin if it is not essential to operations. 2. If the plugin is required, restrict access to the WordPress admin interface to trusted IP addresses and enforce strong authentication mechanisms to reduce the risk of exploitation requiring low privileges. 3. Monitor web server and database logs for unusual SQL query patterns or access attempts indicative of SQL Injection attacks. 4. Implement Web Application Firewall (WAF) rules specifically targeting SQL Injection payloads to block exploitation attempts at the network perimeter. 5. Regularly back up WordPress databases and files to enable recovery in case of compromise. 6. Stay updated with vendor announcements for patches or updates addressing this vulnerability and apply them promptly once available. 7. Conduct security assessments and penetration testing focused on WordPress plugins to identify similar vulnerabilities proactively. 8. Employ principle of least privilege for database users connected to WordPress, limiting the scope of potential data exposure.