CVE-2025-70892: Phpgurukul Cyber Cafe SQLI Vulnerability

CVE-2025-70892 Overview

Phpgurukul Cyber Cafe Management System v1.0 contains a SQL Injection vulnerability in the user management module. The application fails to properly validate user-supplied input in the username parameter of the add-users.php endpoint. This vulnerability allows unauthenticated attackers to execute arbitrary SQL commands against the backend database, potentially leading to complete database compromise, data exfiltration, and unauthorized system access.

Critical Impact

Unauthenticated attackers can exploit this SQL Injection vulnerability to extract sensitive data, modify database contents, or potentially gain administrative access to the Cyber Cafe Management System without any credentials.

Affected Products

• Phpgurukul Cyber Cafe Management System v1.0

Discovery Timeline

• 2026-01-15 - CVE-2025-70892 published to NVD
• 2026-01-22 - Last updated in NVD database

Technical Details for CVE-2025-70892

Vulnerability Analysis

This SQL Injection vulnerability (CWE-89) exists within the add-users.php endpoint of the Phpgurukul Cyber Cafe Management System. The application accepts user input through the username parameter and directly incorporates it into SQL queries without proper sanitization or parameterized query implementation. This classic injection flaw enables attackers to manipulate the SQL query logic by injecting malicious SQL statements through the username field.

The vulnerability is particularly severe because it requires no authentication to exploit. An attacker can interact directly with the vulnerable endpoint over the network, crafting malicious requests that bypass the application layer and interact directly with the underlying MySQL database. Successful exploitation could result in unauthorized access to customer data, billing information, session records, and administrative credentials stored within the system.

Root Cause

The root cause of this vulnerability is improper input validation and the absence of parameterized queries (prepared statements) in the add-users.php file. The application directly concatenates user-supplied input into SQL query strings, allowing attackers to break out of the intended query context and inject arbitrary SQL commands. This represents a fundamental secure coding oversight that could have been prevented by implementing prepared statements with bound parameters.

Attack Vector

The attack vector is network-based and requires no user interaction or prior authentication. An attacker can send specially crafted HTTP requests to the add-users.php endpoint with malicious SQL payloads embedded in the username parameter. The vulnerability can be exploited remotely to perform various SQL injection attacks including UNION-based injection, blind SQL injection, and time-based injection techniques.

Common exploitation scenarios include extracting database schema information, dumping user credentials and sensitive customer data, modifying or deleting database records, and potentially escalating to operating system command execution if the database user has elevated privileges.

Detection Methods for CVE-2025-70892

Indicators of Compromise

• Unusual or malformed HTTP requests to the add-users.php endpoint containing SQL syntax characters such as single quotes, semicolons, or SQL keywords
• Database error messages appearing in application logs or responses indicating query syntax errors
• Unexpected database queries in MySQL logs, particularly those containing UNION SELECT, information_schema references, or sleep/benchmark functions
• Signs of data exfiltration or unauthorized bulk data access in database audit logs

Detection Strategies

• Deploy Web Application Firewall (WAF) rules to detect and block SQL injection patterns in HTTP request parameters
• Implement database activity monitoring to identify anomalous query patterns and unauthorized data access attempts
• Enable verbose logging on the web server and database to capture suspicious request parameters
• Monitor for time-based anomalies in database response times that may indicate blind SQL injection probing

Monitoring Recommendations

• Configure alerts for HTTP requests to add-users.php containing SQL injection signatures
• Establish baseline database query patterns and alert on deviations
• Monitor for authentication bypass attempts and unexpected administrative access
• Review web application logs regularly for reconnaissance activity targeting user management endpoints

How to Mitigate CVE-2025-70892

Immediate Actions Required

• Restrict network access to the Cyber Cafe Management System to trusted IP addresses only
• Disable or remove the add-users.php functionality until a patch is applied
• Implement a Web Application Firewall with SQL injection protection rules in front of the application
• Audit database access logs for any signs of prior exploitation

Patch Information

No official patch has been released by Phpgurukul at the time of this publication. Organizations should monitor the GitHub CVE Repository for updates and consider implementing custom code fixes. The PHP Gurukul Project Overview page may contain future update announcements.

Workarounds

• Implement input validation on the server-side to reject requests containing SQL metacharacters in the username parameter
• Modify the vulnerable code to use PDO prepared statements with parameterized queries instead of direct string concatenation
• Deploy network segmentation to limit database server exposure and restrict which systems can connect to the MySQL instance
• Consider replacing the vulnerable application with an actively maintained alternative until proper security updates are available

# Example: Restrict access to vulnerable endpoint via .htaccess
<Files "add-users.php">
    Order Deny,Allow
    Deny from all
    Allow from 127.0.0.1
    Allow from 192.168.1.0/24
</Files>