CVE-2025-3265: Phpgurukul E-diary Management SQLI Flaw

CVE-2025-3265 Overview

A SQL Injection vulnerability has been identified in PHPGurukul e-Diary Management System version 1.0. This vulnerability exists in the /add-category.php file, where the Category parameter is not properly sanitized before being used in SQL queries. The flaw allows remote attackers to inject malicious SQL commands, potentially leading to unauthorized data access, modification, or deletion within the application's database.

Critical Impact

Remote attackers can exploit this SQL Injection vulnerability to bypass authentication, extract sensitive data from the database, modify or delete records, and potentially gain unauthorized access to the underlying system.

Affected Products

• PHPGurukul e-Diary Management System 1.0
• Applications using the vulnerable /add-category.php endpoint
• Web servers hosting unpatched versions of e-Diary Management System

Discovery Timeline

• 2025-04-04 - CVE-2025-3265 published to NVD
• 2025-04-07 - Last updated in NVD database

Technical Details for CVE-2025-3265

Vulnerability Analysis

This vulnerability stems from improper input validation in the category management functionality of PHPGurukul e-Diary Management System. The /add-category.php file accepts user-supplied input through the Category parameter without adequate sanitization or parameterized queries. When this unsanitized input is directly incorporated into SQL statements, it creates an injection point that attackers can exploit remotely over the network.

The exploit has been publicly disclosed, increasing the risk of widespread exploitation. Since no authentication is required to trigger this vulnerability, any remote attacker with network access to the application can attempt exploitation. Successful attacks could compromise data confidentiality, integrity, and availability within the affected system.

Root Cause

The root cause of CVE-2025-3265 is the failure to implement proper input validation and parameterized queries (prepared statements) when handling user-supplied data in the Category parameter. The application directly concatenates user input into SQL queries without escaping special characters or using secure database access methods. This represents a classic CWE-89 (SQL Injection) vulnerability, which falls under the broader category of CWE-74 (Improper Neutralization of Special Elements in Output Used by a Downstream Component).

Attack Vector

The attack vector is network-based, allowing remote exploitation without requiring authentication. An attacker can craft malicious HTTP requests to the /add-category.php endpoint, embedding SQL injection payloads within the Category parameter. The vulnerability requires no user interaction and can be exploited with low complexity.

The attack involves sending specially crafted requests containing SQL metacharacters and commands within the Category field. When processed by the vulnerable PHP script, these payloads are executed against the backend database, allowing the attacker to perform unauthorized database operations. Detailed technical information regarding the exploitation technique can be found in the GitHub Issue Discussion and VulDB entry #303337.

Detection Methods for CVE-2025-3265

Indicators of Compromise

• Unusual database query patterns or errors in application logs related to /add-category.php
• HTTP requests to /add-category.php containing SQL syntax characters such as single quotes, double dashes, UNION, SELECT, or DROP statements
• Unexpected changes to category data or database schema modifications
• Authentication bypass attempts or unauthorized access to administrative functions

Detection Strategies

• Implement web application firewall (WAF) rules to detect SQL injection patterns in requests to /add-category.php
• Monitor application logs for SQL syntax errors and unusual query execution patterns
• Deploy intrusion detection signatures for common SQL injection payloads targeting PHP applications
• Use database activity monitoring to identify anomalous queries from the e-Diary Management System

Monitoring Recommendations

• Enable detailed logging for all requests to the /add-category.php endpoint
• Configure alerts for high volumes of failed database queries or application errors
• Implement real-time monitoring of database transactions for unauthorized data access patterns
• Review access logs periodically for reconnaissance activity targeting the vulnerable endpoint

How to Mitigate CVE-2025-3265

Immediate Actions Required

• Restrict network access to the /add-category.php endpoint until a patch is available
• Implement input validation and sanitization at the web application firewall level
• Consider temporarily disabling the category management functionality if not critical to operations
• Review and audit database permissions to limit potential damage from successful exploitation

Patch Information

At the time of publication, no official patch has been released by PHPGurukul for this vulnerability. Organizations should monitor the PHPGurukul website and official channels for security updates. In the interim, implementing workarounds and compensating controls is strongly recommended.

For additional technical details and updates regarding this vulnerability, refer to the VulDB entry and the GitHub Issue Discussion.

Workarounds

• Deploy a Web Application Firewall (WAF) with rules to block SQL injection attempts targeting the Category parameter
• Implement server-side input validation to reject requests containing SQL metacharacters
• Use network segmentation to limit access to the application from untrusted networks
• If source code access is available, modify /add-category.php to use parameterized queries or prepared statements

# Example WAF rule configuration for ModSecurity
# Block SQL injection patterns in Category parameter
SecRule ARGS:Category "@detectSQLi" \
    "id:100001,\
    phase:2,\
    deny,\
    status:403,\
    msg:'SQL Injection attempt detected in Category parameter',\
    log,\
    auditlog"