CVE-2026-3487: College Management System SQLi Vulnerability

CVE-2026-3487 Overview

A SQL injection vulnerability has been discovered in itsourcecode College Management System version 1.0. This security flaw exists in the /admin/class-result.php file, where improper handling of the course_code argument allows attackers to inject malicious SQL commands. The vulnerability can be exploited remotely, and exploit details have been publicly disclosed, increasing the risk of active exploitation.

Critical Impact

Remote attackers with administrative access can manipulate the course_code parameter to execute arbitrary SQL queries, potentially leading to unauthorized data access, modification, or deletion of sensitive student and faculty information stored in the database.

Affected Products

• Angeljudesuarez College Management System 1.0
• /admin/class-result.php endpoint

Discovery Timeline

• 2026-03-03 - CVE-2026-3487 published to NVD
• 2026-03-05 - Last updated in NVD database

Technical Details for CVE-2026-3487

Vulnerability Analysis

This SQL injection vulnerability (CWE-89) represents a classic injection flaw (CWE-74) where user-supplied input is incorporated directly into SQL queries without proper sanitization or parameterization. The vulnerable endpoint /admin/class-result.php accepts a course_code parameter that is processed without adequate input validation, allowing attackers to break out of the intended SQL query structure and execute arbitrary database commands.

The attack requires network access and authenticated administrative privileges, but once those conditions are met, an attacker can potentially read, modify, or delete data from the underlying database. College management systems typically store highly sensitive information including student personal details, academic records, faculty information, and administrative credentials, making this vulnerability particularly concerning for educational institutions.

Root Cause

The root cause of this vulnerability is the failure to implement proper input validation and parameterized queries in the /admin/class-result.php file. The course_code argument is directly concatenated or interpolated into SQL queries instead of using prepared statements with bound parameters. This allows user-controlled input to alter the structure and intent of database queries.

Attack Vector

The attack is network-based and requires an attacker to have administrative access to the College Management System web interface. Once authenticated, the attacker can craft malicious requests to the /admin/class-result.php endpoint with specially crafted course_code parameter values containing SQL injection payloads.

The vulnerability allows injection through the course_code parameter, where an attacker can append SQL syntax to extract data from other tables, bypass query restrictions, or potentially execute administrative database operations depending on the database user privileges. Common exploitation techniques would include UNION-based injection to extract data from other tables, Boolean-based blind injection to enumerate database contents, or time-based blind injection when direct output is not visible.

Detection Methods for CVE-2026-3487

Indicators of Compromise

• Unusual SQL error messages in application logs related to the /admin/class-result.php endpoint
• HTTP requests to /admin/class-result.php containing SQL keywords in the course_code parameter (e.g., UNION, SELECT, OR, AND, --, #)
• Anomalous database queries with unexpected syntax patterns or extended execution times
• Unauthorized access to or modification of academic records in the database

Detection Strategies

• Implement Web Application Firewall (WAF) rules to detect and block SQL injection patterns in request parameters
• Monitor HTTP access logs for requests to /admin/class-result.php with suspicious course_code values
• Enable database query logging and alert on queries containing injection signatures
• Deploy runtime application self-protection (RASP) solutions to detect SQL injection attempts

Monitoring Recommendations

• Configure alerting for failed SQL queries and database errors from the College Management System application
• Establish baseline network traffic patterns and alert on anomalous request volumes to administrative endpoints
• Monitor database audit logs for unauthorized data access or schema enumeration activities
• Review authentication logs for credential misuse that could precede exploitation attempts

How to Mitigate CVE-2026-3487

Immediate Actions Required

• Restrict access to the /admin/class-result.php endpoint to trusted IP addresses only
• Implement input validation to sanitize the course_code parameter, allowing only expected alphanumeric values
• Consider temporarily disabling the affected functionality until a patch can be applied
• Review database user privileges and ensure the application connects with least-privilege credentials

Patch Information

No official patch has been released by the vendor at this time. Organizations using itsourcecode College Management System 1.0 should monitor the GitHub Issue Discussion and VulDB Entry for updates. Additionally, check the IT Source Code Blog for any vendor announcements regarding security fixes.

Workarounds

• Implement prepared statements with parameterized queries in the vulnerable PHP file by modifying the source code
• Deploy a Web Application Firewall with SQL injection detection rules in front of the application
• Add server-side input validation to restrict the course_code parameter to a whitelist of valid course codes
• Isolate the database server and limit network access to only necessary application components

# Example WAF rule for ModSecurity to block SQL injection attempts
SecRule ARGS:course_code "@detectSQLi" \
    "id:100001,\
    phase:2,\
    deny,\
    status:403,\
    msg:'SQL Injection Attempt Detected in course_code parameter',\
    log,\
    auditlog"