A high-severity SQL injection vulnerability (CVE-2025-31089) has been identified in Fahad Mahmood’s Order Splitter for WooCommerce plugin, affecting versions up to and including 5.3.0. The flaw, rated 8.5 (HIGH) on the CVSS scale, allows attackers to execute arbitrary SQL commands through improper neutralization of special elements in database queries. This vulnerability was publicly disclosed on April 1, 2025, and poses a significant risk to e-commerce sites using this plugin.
Technical Analysis of CVE-2025-31089
The vulnerability stems from insufficient input sanitization in the Order Splitter plugin’s database queries. According to VulDB records, the flaw enables unauthorized database access through crafted SQL statements. While specific exploitation vectors haven’t been publicly documented, similar WooCommerce plugin vulnerabilities typically occur in order processing or administrative functions where user-supplied data is directly incorporated into SQL queries without proper parameterization.
This vulnerability follows a pattern seen in other WooCommerce plugin flaws, such as CVE-2025-22710 in Smart Manager for WooCommerce, where unescaped input in administrative interfaces led to blind SQL injection. The Order Splitter vulnerability appears particularly dangerous as it doesn’t require authentication in some configurations, similar to the unauthenticated SQL injection found in SMS Alert Order Notifications (≤ v3.7.8).
Impact and Attack Surface
The vulnerability affects all WooCommerce sites using Order Splitter versions ≤ 5.3.0. Successful exploitation could allow attackers to:
- Extract sensitive customer data (names, addresses, payment details)
- Modify order records or inventory data
- Gain administrative access through credential theft
- Perform database denial-of-service attacks
This vulnerability is especially concerning for high-volume e-commerce sites where order splitting functionality is critical for logistics and inventory management. The plugin’s widespread use in WooCommerce environments significantly expands the potential attack surface.
Mitigation and Remediation
Administrators should immediately update to the latest patched version of Order Splitter for WooCommerce. If an update isn’t available, consider these temporary measures:
- Disable the Order Splitter plugin if not essential to operations
- Implement WAF rules to block common SQL injection patterns
- Review database logs for unusual query patterns
- Restrict database user permissions to minimum required levels
For long-term security, developers should adopt prepared statements using WordPress’s WPDB class and implement proper input validation following WordPress coding standards. The $wpdb->prepare() method provides robust protection against SQL injection when properly implemented.
Broader Context of WooCommerce SQL Injection Risks
CVE-2025-31089 is part of a concerning trend of SQL injection vulnerabilities in WooCommerce extensions. Recent examples include:
| CVE | Plugin | CVSS Score |
|---|---|---|
| CVE-2025-23931 | WordPress Local SEO | 9.3 |
| CVE-2025-26535 | Bitcoin/AltCoin Payment Gateway | 8.1 |
| CVE-2025-22710 | Smart Manager for WooCommerce | 8.8 |
These vulnerabilities highlight the importance of rigorous security reviews for WooCommerce plugins, particularly those handling sensitive order data. The prevalence of SQL injection flaws in e-commerce plugins suggests many developers still fail to implement basic security measures like parameterized queries.
Detection and Monitoring Recommendations
Organizations should monitor for these indicators of potential exploitation:
- Unusual database queries containing concatenated strings
- Unexpected database errors in application logs
- Administrative actions from unusual IP addresses
- Sudden changes to order records without corresponding customer activity
Database monitoring solutions should be configured to alert on suspicious query patterns, particularly those containing common SQL injection keywords like UNION, SELECT, or OR 1=1. Web application firewalls can help block exploitation attempts but shouldn’t be relied upon as the sole protective measure.
Conclusion
CVE-2025-31089 represents a serious threat to WooCommerce sites using the Order Splitter plugin. The high CVSS score reflects the potential for significant data breaches and operational disruption. While no public exploits are currently available, the vulnerability’s nature makes it likely to be targeted soon after disclosure.
This incident underscores the broader security challenges facing WordPress and WooCommerce ecosystems, where third-party plugins frequently introduce vulnerabilities. Organizations should implement robust patch management processes and consider security-focused plugin selection criteria when extending WooCommerce functionality.
