CVE-2026-25371: Lumise Product Designer SQLi Vulnerability

CVE-2026-25371 Overview

CVE-2026-25371 is a Blind SQL Injection vulnerability affecting the Lumise Product Designer plugin for WordPress, developed by King-Theme. This vulnerability allows attackers to execute arbitrary SQL commands against the underlying database through improperly neutralized special elements in SQL queries. Blind SQL Injection is particularly dangerous as it enables attackers to extract sensitive data from the database without receiving direct feedback, using time-based or boolean-based inference techniques.

Critical Impact

Successful exploitation could allow attackers to extract sensitive user credentials, customer data, and administrative information from WordPress databases. In severe cases, attackers may escalate to remote code execution via SQL-to-shell techniques.

Affected Products

• Lumise Product Designer plugin for WordPress versions prior to 2.0.9
• WordPress installations running vulnerable Lumise Product Designer versions

Discovery Timeline

• 2026-03-25 - CVE CVE-2026-25371 published to NVD
• 2026-03-25 - Last updated in NVD database

Technical Details for CVE-2026-25371

Vulnerability Analysis

This vulnerability stems from improper neutralization of special elements used in SQL commands (CWE-89). The Lumise Product Designer plugin fails to properly sanitize user-supplied input before incorporating it into SQL queries executed against the WordPress database. This allows attackers to inject malicious SQL syntax that modifies the intended query logic.

Blind SQL Injection differs from traditional SQL Injection in that the attacker cannot directly see the query results. Instead, they must infer data by observing application behavior changes or response time differences. This makes exploitation more time-consuming but equally dangerous, as attackers can methodically extract entire database contents given sufficient time.

The vulnerability affects WordPress e-commerce sites using the Lumise Product Designer plugin for custom product customization features. Given the plugin's focus on product design and customization, databases may contain sensitive customer information including personal details and potentially payment-related data.

Root Cause

The root cause is inadequate input validation and parameterization in the Lumise Product Designer plugin. Instead of using WordPress's prepared statement APIs (such as $wpdb->prepare()) to safely construct SQL queries, vulnerable code paths concatenate user input directly into SQL statements. This allows specially crafted input containing SQL metacharacters to escape the intended data context and execute as SQL commands.

Attack Vector

The attack vector involves sending malicious input through HTTP requests to the WordPress site running the vulnerable Lumise Product Designer plugin. Attackers typically target form fields, URL parameters, or AJAX endpoints that process user input and incorporate it into database queries.

Since this is a Blind SQL Injection, attackers would employ inference-based extraction techniques. Time-based attacks use SQL functions like SLEEP() to introduce detectable delays when conditions are true. Boolean-based attacks observe different application responses (such as error messages or content changes) to infer query results one character at a time.

For detailed technical information about this vulnerability, refer to the Patchstack Vulnerability Report.

Detection Methods for CVE-2026-25371

Indicators of Compromise

• Unusual database query patterns or slow database performance indicative of time-based SQL injection attempts
• HTTP request logs containing SQL metacharacters such as single quotes, UNION, SELECT, SLEEP(), or BENCHMARK() in request parameters
• Abnormal traffic patterns to Lumise Product Designer plugin endpoints
• Database error logs showing malformed SQL queries or syntax errors
• Evidence of data exfiltration through DNS or HTTP channels

Detection Strategies

• Implement Web Application Firewall (WAF) rules to detect SQL injection payloads in HTTP requests targeting WordPress plugins
• Monitor database query logs for unusual patterns including excessive SLEEP() or BENCHMARK() function calls
• Deploy runtime application self-protection (RASP) solutions to detect SQL injection attempts at the application layer
• Review access logs for repeated requests with incremental payload variations, indicative of automated blind SQL injection tools like sqlmap

Monitoring Recommendations

• Enable detailed logging for WordPress database queries and monitor for anomalous patterns
• Configure alerting for high-frequency requests to Lumise Product Designer AJAX endpoints
• Implement database activity monitoring to detect unauthorized data access or extraction attempts
• Monitor outbound DNS queries for data exfiltration via DNS tunneling techniques

How to Mitigate CVE-2026-25371

Immediate Actions Required

• Update Lumise Product Designer plugin to version 2.0.9 or later immediately
• Audit WordPress database for signs of compromise or unauthorized data access
• Review access logs for evidence of SQL injection exploitation attempts
• Consider temporarily disabling the Lumise Product Designer plugin if immediate patching is not possible
• Reset database credentials as a precautionary measure if exploitation is suspected

Patch Information

King-Theme has addressed this vulnerability in Lumise Product Designer version 2.0.9. WordPress administrators should update to this version or later through the WordPress plugin update mechanism. Detailed patch information is available in the Patchstack Vulnerability Report.

Workarounds

• Deploy a Web Application Firewall (WAF) with SQL injection protection rules to filter malicious requests
• Implement database user privilege restrictions to limit the impact of potential SQL injection exploitation
• Consider network-level access controls to restrict access to WordPress administrative and plugin endpoints
• Enable WordPress security plugins that provide real-time threat detection and input sanitization

# WordPress CLI command to update the plugin
wp plugin update lumise --version=2.0.9

# Verify current plugin version
wp plugin list --name=lumise --fields=name,version,status