CVE-2025-67945 Overview
CVE-2025-67945 is a SQL Injection vulnerability affecting the MailerLite – WooCommerce integration plugin (woo-mailerlite) for WordPress. The vulnerability stems from improper neutralization of special elements used in SQL commands, classified under CWE-89. Attackers exploiting this flaw can manipulate SQL queries to access, modify, or delete database contents, potentially compromising the entire WordPress installation and associated WooCommerce store data.
Critical Impact
SQL Injection vulnerabilities in e-commerce plugins can lead to unauthorized access to customer data, payment information, and complete database compromise.
Affected Products
- MailerLite – WooCommerce integration plugin (woo-mailerlite) versions through 3.1.2
- WordPress installations running vulnerable versions of the plugin
- WooCommerce stores utilizing the MailerLite integration
Discovery Timeline
- 2026-01-22 - CVE-2025-67945 published to NVD
- 2026-01-22 - Last updated in NVD database
Technical Details for CVE-2025-67945
Vulnerability Analysis
This SQL Injection vulnerability exists within the MailerLite – WooCommerce integration plugin, which connects WooCommerce stores with the MailerLite email marketing platform. The plugin fails to properly sanitize user-supplied input before incorporating it into SQL queries, allowing attackers to inject malicious SQL statements that execute against the WordPress database.
SQL Injection in WordPress plugins is particularly dangerous because WordPress uses a centralized database architecture. Successful exploitation could grant attackers access to user credentials, customer information, order details, and administrative privileges. In the context of WooCommerce integration, this could expose sensitive e-commerce data including customer addresses, purchase histories, and potentially payment-related information.
Root Cause
The root cause of this vulnerability is the improper neutralization of special elements in user input before constructing SQL queries (CWE-89). The plugin fails to implement proper input validation, parameterized queries, or adequate escaping of special SQL characters, allowing attacker-controlled data to modify the structure and intent of SQL statements.
Attack Vector
The attack vector for this SQL Injection vulnerability involves submitting specially crafted input through the plugin's interfaces. An attacker would typically inject SQL metacharacters and commands through form fields, URL parameters, or API endpoints processed by the vulnerable plugin code.
The exploitation mechanism involves appending or modifying SQL commands within input fields. For example, an attacker might inject SQL statements that terminate the original query and execute additional malicious commands. This could enable data exfiltration through UNION-based attacks, authentication bypass, or even command execution if database server features like xp_cmdshell or INTO OUTFILE are available.
For detailed technical information about this vulnerability, refer to the Patchstack SQL Injection Advisory.
Detection Methods for CVE-2025-67945
Indicators of Compromise
- Unusual database query patterns or errors in WordPress logs indicating SQL syntax manipulation
- Unexpected database modifications, new admin accounts, or altered user privileges
- Web server access logs showing requests with SQL metacharacters (', ", --, ;, UNION, SELECT) targeting plugin endpoints
- Evidence of data exfiltration or unauthorized bulk queries against WooCommerce tables
Detection Strategies
- Monitor web application firewall (WAF) logs for SQL Injection attack signatures targeting /wp-content/plugins/woo-mailerlite/ paths
- Implement database activity monitoring to detect anomalous query patterns or unauthorized data access
- Review WordPress audit logs for unexpected changes to user accounts or plugin settings
- Deploy intrusion detection rules to identify SQL Injection payloads in HTTP traffic
Monitoring Recommendations
- Enable detailed logging for database queries to identify potential SQL Injection attempts
- Configure alerting for multiple failed or malformed SQL queries originating from web application contexts
- Regularly audit WordPress user accounts and permissions for unauthorized changes
- Monitor outbound network traffic for potential data exfiltration following successful exploitation
How to Mitigate CVE-2025-67945
Immediate Actions Required
- Update the MailerLite – WooCommerce integration plugin to a patched version beyond 3.1.2 if available
- Temporarily disable the woo-mailerlite plugin if a patched version is not yet released
- Deploy web application firewall (WAF) rules to block SQL Injection attack patterns
- Audit database logs and user accounts for signs of prior exploitation
Patch Information
Users should check for available updates to the MailerLite – WooCommerce integration plugin through the WordPress plugin repository or contact MailerLite directly for security guidance. Monitor the Patchstack advisory for updated patch information.
Workarounds
- Implement a web application firewall (WAF) with SQL Injection protection rules to filter malicious requests
- Restrict access to the WordPress admin area and plugin functionality to trusted IP addresses
- Use WordPress security plugins that provide virtual patching capabilities for vulnerable plugins
- Consider temporarily deactivating the plugin until an official patch is released
# WordPress CLI command to deactivate the vulnerable plugin
wp plugin deactivate woo-mailerlite
# Verify plugin status
wp plugin list --status=active | grep mailerlite
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.
