CVE-2025-67945 is a critical SQL Injection vulnerability affecting the MailerLite – WooCommerce integration plugin, specifically versions up to and including 3.1.2. The vulnerability arises from improper neutralization of special elements in SQL commands, allowing attackers to inject malicious SQL code. This flaw can be exploited remotely without authentication or user interaction, as indicated by the CVSS vector (AV:N/AC:L/PR:N/UI:N). The vulnerability impacts the confidentiality and integrity of the underlying database, enabling attackers to extract sensitive data or manipulate database contents. The scope is broad due to the widespread use of WooCommerce in e-commerce platforms and the popularity of MailerLite for email marketing automation. Although no public exploits have been reported yet, the ease of exploitation and critical severity score (9.3) highlight the urgency for remediation. The vulnerability could be leveraged to compromise customer data, order information, and other sensitive business data stored within the WooCommerce environment. The lack of available patches at the time of reporting necessitates immediate risk mitigation strategies to protect affected installations.

For European organizations, this vulnerability poses a significant risk to the confidentiality of customer and business data managed through WooCommerce stores integrated with MailerLite. Exploitation could lead to unauthorized data disclosure, undermining GDPR compliance and potentially resulting in regulatory penalties and reputational damage. Integrity loss, while rated lower than confidentiality, could disrupt order processing or marketing data, impacting business operations. The vulnerability's remote and unauthenticated exploitability increases the attack surface, making it attractive for threat actors targeting e-commerce platforms. Given the critical nature of e-commerce in Europe and the reliance on WooCommerce and MailerLite for marketing automation, this vulnerability could affect a wide range of sectors including retail, services, and digital commerce. The absence of known exploits currently provides a window for proactive defense, but the risk of rapid weaponization remains high.

1. Immediately monitor official MailerLite and WooCommerce channels for security patches addressing CVE-2025-67945 and apply updates as soon as they become available. 2. Until patches are released, implement Web Application Firewall (WAF) rules specifically designed to detect and block SQL injection attempts targeting the MailerLite integration endpoints. 3. Conduct thorough input validation and sanitization on all user-supplied data interacting with the plugin, employing parameterized queries or prepared statements where possible. 4. Restrict database user privileges associated with WooCommerce and MailerLite to the minimum necessary, limiting the potential impact of SQL injection. 5. Enable detailed logging and real-time monitoring of database queries and application logs to detect anomalous activities indicative of exploitation attempts. 6. Educate development and security teams about the vulnerability to ensure rapid response and remediation. 7. Consider temporarily disabling the MailerLite integration if immediate patching is not feasible and business operations allow.