CVE-2025-4927: Phpgurukul Marriage System SQLi Flaw

CVE-2025-4927 Overview

CVE-2025-4927 is a SQL Injection vulnerability affecting PHPGurukul Online Marriage Registration System version 1.0. The vulnerability exists in the file /admin/between-dates-application-report.php where the fromdate and todate parameters are not properly sanitized before being used in SQL queries. This allows unauthenticated remote attackers to inject malicious SQL commands, potentially leading to unauthorized data access, data manipulation, or complete database compromise.

Critical Impact

Remote attackers can exploit this SQL injection vulnerability to extract sensitive marriage registration data, manipulate records, or potentially gain administrative access to the application through database-level attacks.

Affected Products

• PHPGurukul Online Marriage Registration System 1.0
• PHP web applications using vulnerable date-range reporting functionality
• Systems with the affected /admin/between-dates-application-report.php endpoint exposed

Discovery Timeline

• 2025-05-19 - CVE-2025-4927 published to NVD
• 2025-05-21 - Last updated in NVD database

Technical Details for CVE-2025-4927

Vulnerability Analysis

This SQL Injection vulnerability occurs due to improper input validation in the administrative date-based reporting functionality. The application fails to sanitize user-supplied input in the fromdate and todate parameters before incorporating them into SQL queries. When an administrator or attacker accesses the between-dates application report feature, the date parameters are directly concatenated into the database query string without proper escaping or parameterization.

The vulnerability is classified under CWE-89 (SQL Injection) and CWE-74 (Injection), indicating that user-controlled input is directly used in constructing SQL commands. The attack can be initiated remotely through the network, requiring no authentication or user interaction, making it particularly dangerous for internet-facing installations.

Root Cause

The root cause of this vulnerability is the lack of input sanitization and the use of unsanitized user input directly in SQL query construction. The fromdate and todate GET or POST parameters in /admin/between-dates-application-report.php are passed directly to database queries without:

• Parameterized queries or prepared statements
• Input validation to ensure date format compliance
• Proper escaping of special characters
• Whitelist validation of acceptable input patterns

This represents a classic SQL injection vulnerability pattern where developer oversight in implementing secure coding practices allows attackers to manipulate the intended SQL query structure.

Attack Vector

The attack can be executed remotely over the network by manipulating the date parameters sent to the vulnerable endpoint. An attacker would craft malicious input containing SQL syntax within the fromdate or todate parameters. When the application processes this request, the injected SQL commands are executed by the database server in the context of the application's database connection.

Potential attack scenarios include:

• Union-based injection to extract data from other database tables
• Boolean-based blind injection to enumerate database contents
• Time-based blind injection for data exfiltration when other methods fail
• Stacked queries (if supported by the database configuration) to modify or delete records

The vulnerability mechanism involves unsanitized date parameters being passed directly to SQL queries. For detailed technical analysis and proof-of-concept information, refer to the GitHub CVE Issue and VulDB entry #309489.

Detection Methods for CVE-2025-4927

Indicators of Compromise

• Unusual SQL error messages in web server logs originating from /admin/between-dates-application-report.php
• Access logs showing requests with SQL keywords (UNION, SELECT, DROP, INSERT) in the fromdate or todate parameters
• Database audit logs revealing unexpected queries or data access patterns from the web application user
• Anomalous outbound traffic if data exfiltration occurs via DNS or HTTP-based SQL injection techniques

Detection Strategies

• Deploy Web Application Firewall (WAF) rules to detect SQL injection patterns in HTTP parameters
• Implement database activity monitoring to identify anomalous query patterns from the application
• Configure intrusion detection systems (IDS) with signatures for SQL injection attack payloads
• Enable detailed application logging for the /admin/ directory to capture suspicious requests

Monitoring Recommendations

• Monitor web server access logs for requests to /admin/between-dates-application-report.php with unusual parameter values
• Set up alerts for database errors or exceptions that may indicate attempted SQL injection attacks
• Implement real-time security information and event management (SIEM) correlation for SQL injection indicators
• Regularly review database user privileges to ensure the application uses least-privilege principles

How to Mitigate CVE-2025-4927

Immediate Actions Required

• Restrict access to the /admin/ directory using IP whitelisting or VPN requirements
• Implement Web Application Firewall rules to block SQL injection patterns in the vulnerable parameters
• Consider temporarily disabling the between-dates reporting functionality until a patch is applied
• Audit database access logs for evidence of prior exploitation attempts

Patch Information

At the time of this publication, no official patch from PHPGurukul has been documented for this vulnerability. Organizations using the Online Marriage Registration System should monitor the PHPGurukul website for security updates. Given the application is version 1.0 and the exploit has been publicly disclosed, users should consider the following alternatives until an official patch is released.

For additional vulnerability details and updates, consult the VulDB entry and VulDB CTI intelligence.

Workarounds

• Implement input validation at the application level by modifying the PHP code to use prepared statements with parameterized queries
• Deploy a reverse proxy with ModSecurity or similar WAF capabilities to filter malicious requests
• Restrict network access to the administrative interface to trusted IP addresses only
• Consider using PHP's PDO extension with prepared statements as a code-level fix if modifying the application

# Example Apache .htaccess configuration to restrict admin access
<Directory "/var/www/html/admin">
    Order Deny,Allow
    Deny from all
    Allow from 192.168.1.0/24
    Allow from 10.0.0.0/8
</Directory>