CVE-2026-6030: Construction Management System SQLi Flaw

CVE-2026-6030 Overview

A SQL injection vulnerability has been identified in itsourcecode Construction Management System version 1.0. The vulnerability exists in an unknown function of the file /del1.php, where manipulation of the toolname argument enables SQL injection attacks. This flaw allows remote attackers to execute arbitrary SQL commands against the backend database, potentially leading to unauthorized data access, modification, or deletion.

Critical Impact

Remote attackers can exploit this SQL injection vulnerability to compromise database integrity, extract sensitive information, and potentially gain unauthorized access to the underlying system through database-level attacks.

Affected Products

• itsourcecode Construction Management System 1.0
• Systems utilizing the vulnerable /del1.php endpoint

Discovery Timeline

• 2026-04-10 - CVE-2026-6030 published to NVD
• 2026-04-13 - Last updated in NVD database

Technical Details for CVE-2026-6030

Vulnerability Analysis

This SQL injection vulnerability affects the /del1.php file in the Construction Management System. The vulnerability stems from improper handling of user-supplied input in the toolname parameter. When an authenticated user sends a crafted request to this endpoint, the application fails to properly sanitize or parameterize the input before incorporating it into SQL queries.

The vulnerability has been classified under CWE-74 (Improper Neutralization of Special Elements in Output Used by a Downstream Component), indicating that the application does not adequately neutralize special characters or elements that could be interpreted as SQL commands by the database engine.

Remote exploitation is possible over the network, requiring low privileges to execute. The exploit for this vulnerability has been publicly disclosed, increasing the risk of exploitation in the wild.

Root Cause

The root cause of this vulnerability is inadequate input validation and sanitization in the /del1.php file. The application directly incorporates user-controlled data from the toolname parameter into SQL queries without using prepared statements or parameterized queries. This allows attackers to inject malicious SQL code that gets executed by the database server.

Attack Vector

The attack vector for CVE-2026-6030 is network-based, allowing remote exploitation. An attacker with low-level privileges can send specially crafted HTTP requests to the /del1.php endpoint with malicious SQL payloads in the toolname parameter. The vulnerability requires no user interaction, making it straightforward to exploit once an attacker has valid credentials or access to the affected endpoint.

The vulnerability allows attackers to potentially extract sensitive data from the database, modify or delete records, bypass authentication mechanisms through SQL manipulation, and in some configurations, escalate to remote code execution through database functions.

Detection Methods for CVE-2026-6030

Indicators of Compromise

• Unusual SQL error messages in application logs originating from /del1.php
• HTTP requests to /del1.php containing SQL keywords like UNION, SELECT, DROP, or comment sequences (--, /**/) in the toolname parameter
• Database audit logs showing unexpected queries or data access patterns
• Abnormal database traffic volume or suspicious query execution times

Detection Strategies

• Implement Web Application Firewall (WAF) rules to detect and block SQL injection patterns in the toolname parameter
• Monitor HTTP access logs for requests to /del1.php with encoded or suspicious characters in query parameters
• Enable database query logging and alert on unusual query patterns or SQL syntax errors
• Deploy intrusion detection systems (IDS) with signatures for common SQL injection techniques

Monitoring Recommendations

• Enable verbose logging for the Construction Management System application
• Configure real-time alerting for SQL errors and exceptions from the database server
• Implement network traffic analysis to detect SQL injection payloads in HTTP requests
• Review authentication logs for any anomalous access patterns to the affected endpoint

How to Mitigate CVE-2026-6030

Immediate Actions Required

• Restrict access to the /del1.php endpoint until a patch is applied
• Implement Web Application Firewall rules to filter SQL injection attempts targeting the toolname parameter
• Review and harden database user permissions to limit the potential impact of SQL injection
• Consider temporarily disabling the affected functionality if it is not business-critical

Patch Information

No official vendor patch has been identified at the time of publication. Organizations using itsourcecode Construction Management System should monitor the IT Source Code website for security updates. Additional technical details about this vulnerability are available through the VulDB vulnerability entry and the GitHub Issue Report.

Workarounds

• Implement input validation to reject requests with SQL metacharacters in the toolname parameter
• Deploy a reverse proxy or WAF with SQL injection filtering capabilities in front of the application
• Modify the application code to use prepared statements or parameterized queries for all database interactions
• Implement the principle of least privilege for database accounts used by the application

# Example WAF rule to block SQL injection in toolname parameter
# ModSecurity rule configuration
SecRule ARGS:toolname "@detectSQLi" \
    "id:1001,\
    phase:2,\
    block,\
    msg:'SQL Injection Attempt Detected in toolname parameter',\
    log,\
    severity:'CRITICAL'"