CVE-2025-4934: Phpgurukul User Management SQLI Flaw

CVE-2025-4934 Overview

A critical SQL Injection vulnerability has been identified in PHPGurukul User Registration & Login and User Management System version 3.3. The vulnerability exists in the /edit-profile.php file where the Contact parameter is not properly sanitized before being used in SQL queries. This allows remote attackers to manipulate database queries, potentially leading to unauthorized data access, modification, or deletion.

Critical Impact
Remote attackers can exploit this SQL Injection vulnerability via the Contact parameter in edit-profile.php to extract sensitive user data, modify database records, or potentially gain unauthorized access to the underlying system.

Affected Products

PHPGurukul User Registration & Login and User Management System version 3.3
Applications using the vulnerable /edit-profile.php endpoint

Discovery Timeline

May 19, 2025 - CVE-2025-4934 published to NVD
May 28, 2025 - Last updated in NVD database

Technical Details for CVE-2025-4934

Vulnerability Analysis

This SQL Injection vulnerability (CWE-89) occurs in the profile editing functionality of the PHPGurukul User Registration & Login and User Management System. The application fails to properly sanitize the Contact parameter before incorporating it into SQL queries, creating an injection point that attackers can exploit remotely without authentication.

The vulnerability is classified under both CWE-89 (Improper Neutralization of Special Elements used in an SQL Command) and CWE-74 (Improper Neutralization of Special Elements in Output Used by a Downstream Component), indicating that user-supplied input flows directly into database operations without adequate filtering or parameterization.

Root Cause

The root cause of this vulnerability is improper input validation and lack of parameterized queries in the /edit-profile.php file. When processing the Contact parameter, the application directly concatenates user-supplied data into SQL statements rather than using prepared statements or input sanitization. This classic SQL Injection pattern allows malicious SQL code to be injected and executed against the backend database.

Attack Vector

The attack can be initiated remotely over the network. An attacker can craft malicious input containing SQL syntax in the Contact field when submitting the profile edit form. The vulnerable endpoint processes this input without sanitization, allowing the injected SQL commands to execute against the database.

The vulnerability is publicly disclosed with exploit details available through the GitHub Issue #1 and documented in VulDB #309496. Attackers could potentially:

Extract sensitive user credentials and personal information
Modify or delete database records
Bypass authentication mechanisms
Escalate privileges within the application

Detection Methods for CVE-2025-4934

Indicators of Compromise

Unusual SQL error messages in application logs originating from /edit-profile.php
Anomalous database queries containing SQL keywords like UNION, SELECT, DROP, or comment sequences (--, /**/) in the Contact field
Unexpected database modifications or data exfiltration patterns
Multiple rapid requests to the /edit-profile.php endpoint with varying Contact parameter values

Detection Strategies

Implement Web Application Firewall (WAF) rules to detect SQL Injection patterns in POST parameters targeting the edit-profile endpoint
Monitor application logs for SQL syntax errors and database connection anomalies
Deploy database activity monitoring to detect unusual query patterns or unauthorized data access
Use intrusion detection systems (IDS) with SQL Injection signature rules

Monitoring Recommendations

Enable verbose logging for the /edit-profile.php endpoint and database queries
Set up alerts for database errors and failed authentication attempts following profile update requests
Monitor for bulk data extraction patterns that may indicate successful exploitation
Review access logs for suspicious patterns targeting user management endpoints

How to Mitigate CVE-2025-4934

Immediate Actions Required

Restrict access to the /edit-profile.php endpoint until patches are applied
Implement input validation and sanitization for the Contact parameter at the web server or WAF level
Review and audit database access logs for potential exploitation attempts
Consider temporarily disabling the profile edit functionality if the application is exposed to untrusted networks

Patch Information

At the time of publication, no official vendor patch has been released for this vulnerability. Organizations using PHPGurukul User Registration & Login and User Management System version 3.3 should monitor the PHP Gurukul Homepage for security updates. Additional vulnerability details are available at VulDB CTI ID #309496.

Workarounds

Implement parameterized queries or prepared statements in the vulnerable PHP code to prevent SQL Injection
Deploy a Web Application Firewall (WAF) with SQL Injection detection rules in front of the application
Apply strict input validation on the Contact field, allowing only expected characters (digits, dashes, and plus signs for phone numbers)
Limit database user privileges to minimize the impact of successful exploitation

bash

# Example: Apache mod_security rule to block SQL Injection attempts
# Add to your Apache configuration or .htaccess file
SecRule ARGS:Contact "@detectSQLi" \
    "id:1001,phase:2,deny,status:403,msg:'SQL Injection attempt blocked in Contact parameter'"