CVE-2026-6191: Construction Management System SQLi Flaw

CVE-2026-6191 Overview

A SQL Injection vulnerability has been identified in itsourcecode Construction Management System version 1.0. This vulnerability affects the /equipments.php file, where the Name argument lacks proper input validation and sanitization. Remote attackers can exploit this flaw to inject malicious SQL commands, potentially compromising the database and associated application data.

Critical Impact

Remote attackers can manipulate database queries through the Name parameter in /equipments.php, potentially leading to unauthorized data access, modification, or deletion.

Affected Products

• itsourcecode Construction Management System 1.0

Discovery Timeline

• 2026-04-13 - CVE-2026-6191 published to NVD
• 2026-04-13 - Last updated in NVD database

Technical Details for CVE-2026-6191

Vulnerability Analysis

This SQL Injection vulnerability exists due to insufficient input validation in the /equipments.php file of the Construction Management System. User-supplied data passed through the Name parameter is incorporated directly into SQL queries without proper sanitization or parameterized query implementation. This allows attackers to craft malicious input that modifies the intended SQL statement logic.

The vulnerability is classified under CWE-74 (Improper Neutralization of Special Elements in Output Used by a Downstream Component), indicating that the application fails to properly neutralize special characters that have significance to the SQL interpreter.

Root Cause

The root cause of this vulnerability is the direct concatenation of user input into SQL queries without implementing prepared statements, parameterized queries, or proper input validation. The Name parameter in the equipment management functionality accepts arbitrary user input that is passed directly to the database query engine, allowing attackers to break out of the intended query context and execute arbitrary SQL commands.

Attack Vector

The attack can be launched remotely over the network by an authenticated user. An attacker sends a specially crafted HTTP request to /equipments.php containing malicious SQL syntax within the Name parameter. When the application processes this request, the injected SQL code is executed against the backend database.

The exploitation requires low privileges and no user interaction, making it relatively straightforward for authenticated attackers to exploit. The exploit has been publicly disclosed, increasing the risk of active exploitation.

Technical details and proof-of-concept information can be found in the GitHub Issue Discussion and the VulDB Vulnerability #357113 advisory.

Detection Methods for CVE-2026-6191

Indicators of Compromise

• Unusual database query patterns or errors in application logs related to /equipments.php
• Web server access logs showing suspicious requests to /equipments.php with abnormal Name parameter values containing SQL syntax
• Database audit logs indicating unexpected queries, data extraction attempts, or schema enumeration
• Application errors referencing SQL syntax errors or database connection issues

Detection Strategies

• Deploy Web Application Firewall (WAF) rules to detect and block common SQL injection patterns in HTTP parameters
• Implement application-level logging to capture all requests to /equipments.php and flag those containing SQL metacharacters
• Configure database auditing to monitor for suspicious query patterns, UNION-based attacks, or time-based blind injection attempts
• Use SentinelOne Singularity to monitor for anomalous process behavior or database exfiltration attempts

Monitoring Recommendations

• Enable detailed logging for all HTTP requests to the Construction Management System application
• Monitor database server for unusual query execution times that may indicate time-based blind SQL injection
• Set up alerts for multiple failed SQL queries originating from the same source IP
• Review access logs for patterns consistent with automated SQL injection tools

How to Mitigate CVE-2026-6191

Immediate Actions Required

• Restrict access to /equipments.php to trusted users only until a patch is available
• Implement input validation and sanitization for the Name parameter at the application level
• Deploy WAF rules specifically targeting SQL injection attempts on the affected endpoint
• Consider temporarily disabling the equipment management functionality if it is not business-critical

Patch Information

No official patch information is currently available from the vendor. Organizations should monitor the IT Source Code website for security updates. For additional vulnerability details and tracking, refer to VulDB Submission #797384.

Workarounds

• Implement prepared statements or parameterized queries in the affected code section
• Add input validation to reject SQL metacharacters in the Name parameter
• Deploy a reverse proxy or WAF to filter malicious requests before they reach the application
• Apply principle of least privilege to database accounts used by the application to limit impact of successful exploitation

# Example WAF rule configuration (ModSecurity)
SecRule ARGS:Name "@detectSQLi" \
    "id:1001,\
    phase:2,\
    deny,\
    status:403,\
    msg:'SQL Injection attempt detected in Name parameter',\
    logdata:'Matched Data: %{MATCHED_VAR}'"