CVE-2026-6595: School Management System SQL Vulnerability

CVE-2026-6595 Overview

A SQL injection vulnerability has been identified in the ProjectsAndPrograms School Management System affecting the buslocation.php file within the HTTP GET Parameter Handler component. The vulnerability allows remote attackers to manipulate the bus_id parameter to execute arbitrary SQL queries against the backend database. This exploitation can lead to unauthorized data access, data manipulation, and potential further system compromise.

Critical Impact

Remote attackers can exploit this SQL injection flaw to extract sensitive student, faculty, and administrative data from the School Management System database without authentication.

Affected Products

• ProjectsAndPrograms School Management System (commit 6b6fae5426044f89c08d0dd101c7fa71f9042a59 and prior)
• HTTP GET Parameter Handler component (buslocation.php)
• Rolling release versions prior to vulnerability disclosure

Discovery Timeline

• 2026-04-20 - CVE CVE-2026-6595 published to NVD
• 2026-04-22 - Last updated in NVD database

Technical Details for CVE-2026-6595

Vulnerability Analysis

This SQL injection vulnerability exists in the buslocation.php file of the School Management System. The application fails to properly sanitize user-supplied input in the bus_id parameter before incorporating it into SQL queries. When HTTP GET requests are processed by the Parameter Handler component, malicious input can be crafted to break out of the intended query structure and execute attacker-controlled SQL statements.

The vulnerability is remotely exploitable and requires no authentication or user interaction. Successful exploitation could allow attackers to read, modify, or delete database contents including sensitive student records, teacher information, bus schedules, and administrative credentials. The vendor was contacted regarding this disclosure but did not respond.

Root Cause

The root cause of this vulnerability is improper input validation and lack of parameterized queries in the buslocation.php file. The bus_id parameter from HTTP GET requests is directly concatenated into SQL query strings without adequate sanitization or the use of prepared statements. This allows special SQL characters and commands to be interpreted by the database engine rather than being treated as literal data values.

Attack Vector

The attack can be initiated remotely over the network by sending specially crafted HTTP GET requests to the vulnerable buslocation.php endpoint. An attacker constructs malicious payloads in the bus_id parameter that contain SQL injection syntax. When processed, these payloads alter the query logic to perform unauthorized database operations such as UNION-based data extraction, blind injection for data enumeration, or time-based inference attacks to map the database schema.

The vulnerability requires no authentication and no user interaction, making it particularly dangerous in internet-facing deployments of the School Management System.

Detection Methods for CVE-2026-6595

Indicators of Compromise

• Unusual or malformed HTTP GET requests to buslocation.php containing SQL syntax characters such as single quotes, semicolons, or SQL keywords
• Database error messages exposed in application responses indicating query manipulation
• Unexpected database query patterns or increased query volume targeting bus location tables
• Evidence of UNION SELECT statements or time-based blind injection techniques in web server logs

Detection Strategies

• Configure web application firewalls (WAF) to detect and block SQL injection patterns in the bus_id parameter
• Monitor web server access logs for requests to buslocation.php containing suspicious characters or SQL keywords
• Implement database activity monitoring to detect anomalous query patterns or unauthorized data access attempts
• Deploy intrusion detection systems with SQL injection signature rules targeting the affected endpoint

Monitoring Recommendations

• Enable verbose logging for all requests to the buslocation.php endpoint and review regularly for injection attempts
• Set up alerts for database errors or exceptions that may indicate exploitation attempts
• Monitor for data exfiltration indicators such as unusually large response sizes from the affected component
• Track authentication failures and access to sensitive tables that may follow successful SQL injection exploitation

How to Mitigate CVE-2026-6595

Immediate Actions Required

• Restrict or disable access to the buslocation.php endpoint if bus location functionality is not critical
• Implement web application firewall rules to block SQL injection patterns targeting the bus_id parameter
• Place the School Management System behind network access controls to limit exposure to trusted networks only
• Review database access logs for evidence of prior exploitation and assess data integrity

Patch Information

The ProjectsAndPrograms School Management System uses a rolling release model without version numbers. As of the last NVD update on 2026-04-22, the vendor has not responded to disclosure attempts and no official patch is available. Organizations should monitor the project repository for updates and implement the workarounds below until a fix is released.

For additional details, refer to the VulDB Vulnerability Report and VulDB CTI Information.

Workarounds

• Modify the buslocation.php source code to use parameterized queries or prepared statements for the bus_id parameter
• Implement server-side input validation to ensure bus_id accepts only numeric values before processing
• Deploy a web application firewall with SQL injection protection rules in front of the School Management System
• Consider temporarily disabling the bus location feature until the vendor provides an official security update

# Example: Apache mod_rewrite rule to block suspicious bus_id values
# Add to .htaccess or Apache configuration
RewriteEngine On
RewriteCond %{QUERY_STRING} bus_id=.*['\";] [NC,OR]
RewriteCond %{QUERY_STRING} bus_id=.*(union|select|insert|drop|delete) [NC]
RewriteRule ^buslocation\.php$ - [F,L]