CVE-2025-6322: Pre-school Enrollment System SQLi Flaw

CVE-2025-6322 Overview

A critical SQL injection vulnerability has been discovered in PHPGurukul Pre-School Enrollment System version 1.0. The vulnerability exists in the /visit.php file, where improper handling of the gname parameter allows attackers to inject malicious SQL statements. This flaw can be exploited remotely without authentication, potentially enabling unauthorized access to sensitive database information, data manipulation, or complete database compromise.

Critical Impact

Remote attackers can exploit this SQL injection vulnerability to extract sensitive enrollment data, modify database records, or potentially gain unauthorized access to the underlying system through the vulnerable gname parameter in /visit.php.

Affected Products

• PHPGurukul Pre-School Enrollment System 1.0

Discovery Timeline

• 2025-06-20 - CVE-2025-6322 published to NVD
• 2025-06-26 - Last updated in NVD database

Technical Details for CVE-2025-6322

Vulnerability Analysis

This SQL injection vulnerability (CWE-74: Improper Neutralization of Special Elements in Output Used by a Downstream Component) affects the /visit.php endpoint in PHPGurukul Pre-School Enrollment System. The application fails to properly sanitize user-supplied input in the gname parameter before incorporating it into SQL queries executed against the backend database.

The vulnerability allows unauthenticated remote attackers to manipulate database queries by injecting specially crafted SQL syntax through the gname parameter. This can lead to unauthorized data access, modification of existing records, or enumeration of the entire database schema. The exploit has been publicly disclosed, increasing the risk of active exploitation.

Root Cause

The root cause of this vulnerability is insufficient input validation and the absence of parameterized queries (prepared statements) when processing the gname parameter in the /visit.php file. The application directly concatenates user input into SQL query strings without proper sanitization or escaping, allowing attackers to break out of the intended query structure and execute arbitrary SQL commands.

Attack Vector

The attack can be launched remotely over the network without requiring any authentication or user interaction. An attacker can craft malicious HTTP requests to the /visit.php endpoint, manipulating the gname parameter to include SQL injection payloads. These payloads can be designed to extract data using UNION-based injection, perform blind SQL injection through conditional responses, or execute time-based attacks to enumerate database contents.

The vulnerability manifests when user-supplied data in the gname parameter is directly interpolated into SQL queries without proper sanitization. For detailed technical information and proof-of-concept details, see the GitHub Issue Discussion and VulDB Entry #313322.

Detection Methods for CVE-2025-6322

Indicators of Compromise

• Unusual or malformed requests to /visit.php containing SQL syntax characters such as single quotes, double dashes, or UNION keywords in the gname parameter
• Database error messages exposed in application responses indicating SQL syntax errors
• Unexpected database queries or access patterns in database audit logs
• Web server access logs showing repeated requests to /visit.php with varying gname parameter values

Detection Strategies

• Implement web application firewall (WAF) rules to detect and block common SQL injection patterns in HTTP parameters
• Monitor application logs for SQL error messages or unusual query execution times that may indicate exploitation attempts
• Deploy intrusion detection systems (IDS) with signatures for SQL injection attack patterns
• Enable database query logging and alert on suspicious query patterns or unauthorized data access

Monitoring Recommendations

• Enable detailed logging on web servers for all requests to /visit.php and review regularly for suspicious activity
• Configure database audit logging to track queries executed by the web application user account
• Set up real-time alerting for detection of SQL injection patterns in web traffic
• Monitor for any unauthorized database connections or unusual data exfiltration patterns

How to Mitigate CVE-2025-6322

Immediate Actions Required

• Remove or restrict public access to PHPGurukul Pre-School Enrollment System until a patch is available
• Implement a web application firewall with SQL injection protection rules in front of the vulnerable application
• Apply input validation to the gname parameter, restricting it to expected character sets and lengths
• Review and audit all database user permissions to ensure the application uses least-privilege access

Patch Information

At the time of publication, no official patch has been released by PHPGurukul for this vulnerability. Monitor the PHPGurukul website for security updates. Organizations using this software should consider implementing the workarounds below and evaluating alternative solutions until an official fix is available.

Workarounds

• Implement server-side input validation to sanitize the gname parameter by removing or escaping special SQL characters
• Modify the vulnerable code to use prepared statements (parameterized queries) with PDO or MySQLi instead of direct query concatenation
• Deploy a web application firewall to filter malicious SQL injection payloads before they reach the application
• Restrict network access to the application to trusted IP addresses or internal networks only

# Example Apache .htaccess rule to block common SQL injection patterns
<IfModule mod_rewrite.c>
    RewriteEngine On
    RewriteCond %{QUERY_STRING} (\%27|\'|union|select|insert|update|delete|drop|--|;) [NC]
    RewriteRule ^visit\.php$ - [F,L]
</IfModule>