CVE-2026-6148: Vehicle Showroom Management System SQLi

CVE-2026-6148 Overview

A SQL injection vulnerability has been identified in code-projects Vehicle Showroom Management System version 1.0. The vulnerability exists in the /util/MonthTotalReportUpdateFunction.php file, where insufficient input validation of the BRANCH_ID argument allows attackers to inject malicious SQL statements. This flaw can be exploited remotely without authentication, potentially allowing unauthorized database access, data manipulation, or information disclosure.

Critical Impact

Remote attackers can exploit this SQL injection vulnerability to access, modify, or delete sensitive data in the underlying database, potentially compromising the entire showroom management system.

Affected Products

• code-projects Vehicle Showroom Management System 1.0
• MonthTotalReportUpdateFunction.php component

Discovery Timeline

• April 13, 2026 - CVE-2026-6148 published to NVD
• April 13, 2026 - Last updated in NVD database

Technical Details for CVE-2026-6148

Vulnerability Analysis

This vulnerability is classified under CWE-74 (Improper Neutralization of Special Elements in Output Used by a Downstream Component), commonly known as injection. The flaw resides in the MonthTotalReportUpdateFunction.php file, which processes the BRANCH_ID parameter without proper sanitization. When user-supplied input is directly incorporated into SQL queries without validation or parameterization, attackers can manipulate the query structure to execute arbitrary SQL commands.

The vulnerability is network-accessible, meaning attackers can exploit it remotely over HTTP/HTTPS connections. The exploit has been publicly disclosed and documented, increasing the risk of widespread exploitation against vulnerable installations.

Root Cause

The root cause of this vulnerability is improper input validation and lack of parameterized queries in the PHP application code. The BRANCH_ID argument is passed directly into SQL queries without proper sanitization, escaping, or the use of prepared statements. This allows specially crafted input containing SQL metacharacters to alter the intended query logic and execute unauthorized database operations.

Attack Vector

The attack can be carried out remotely via network access to the vulnerable PHP endpoint. An attacker crafts a malicious HTTP request containing SQL injection payloads in the BRANCH_ID parameter. When the application processes this request, the unsanitized input is incorporated into a SQL query, allowing the attacker to:

1. Extract sensitive information from the database
2. Modify or delete existing records
3. Potentially escalate privileges within the application
4. In some configurations, execute operating system commands

The vulnerability does not require authentication, making it accessible to any network attacker who can reach the target application. Technical details and proof-of-concept information are available in the GitHub CVE Issue #2 and the VulDB Vulnerability #357028 entries.

Detection Methods for CVE-2026-6148

Indicators of Compromise

• Unusual SQL error messages in application logs originating from MonthTotalReportUpdateFunction.php
• HTTP requests to /util/MonthTotalReportUpdateFunction.php containing SQL metacharacters (single quotes, double dashes, UNION statements) in the BRANCH_ID parameter
• Database query logs showing unexpected or malformed queries involving branch-related tables
• Signs of data exfiltration or unauthorized database modifications

Detection Strategies

• Deploy Web Application Firewall (WAF) rules to detect and block SQL injection patterns in the BRANCH_ID parameter
• Implement database activity monitoring to identify anomalous query patterns or unauthorized data access
• Enable detailed access logging for the /util/ directory and monitor for suspicious request patterns
• Utilize intrusion detection systems (IDS) with SQL injection signature rules targeting this specific endpoint

Monitoring Recommendations

• Review application and web server logs for requests to MonthTotalReportUpdateFunction.php with unusual parameter values
• Set up alerts for database errors or exceptions that may indicate injection attempts
• Monitor outbound network traffic for potential data exfiltration following successful exploitation
• Regularly audit database access logs for unauthorized operations on showroom management tables

How to Mitigate CVE-2026-6148

Immediate Actions Required

• Restrict network access to the vulnerable endpoint /util/MonthTotalReportUpdateFunction.php using firewall rules or web server configuration
• Implement input validation to sanitize the BRANCH_ID parameter before processing
• Deploy WAF rules to block common SQL injection patterns targeting this application
• Consider taking the vulnerable functionality offline until a permanent fix can be applied

Patch Information

As of the last update on April 13, 2026, no official vendor patch has been released for this vulnerability. Organizations using the Vehicle Showroom Management System should monitor the Code Projects website for security updates. Additional vulnerability details and community-contributed information can be found at the VulDB entry.

Workarounds

• Modify the PHP source code to use prepared statements with parameterized queries for all database operations involving user input
• Implement strict input validation to allow only numeric values for the BRANCH_ID parameter
• Restrict access to the affected endpoint through IP whitelisting or authentication requirements
• Deploy a reverse proxy or WAF to inspect and filter malicious requests before they reach the application

# Example Apache .htaccess restriction for the vulnerable directory
<Directory "/var/www/html/util">
    Order Deny,Allow
    Deny from all
    Allow from 192.168.1.0/24
</Directory>