CVE-2026-2073: School Management System SQL Injection Flaw

CVE-2026-2073 Overview

A SQL injection vulnerability has been identified in itsourcecode School Management System version 1.0. This vulnerability exists in the file /ramonsys/user/index.php and can be exploited through manipulation of the ID parameter. The flaw allows remote attackers to inject malicious SQL queries, potentially compromising the confidentiality, integrity, and availability of the underlying database. The exploit has been publicly disclosed, increasing the risk of active exploitation in the wild.

Critical Impact

Remote attackers can exploit this SQL injection vulnerability to extract sensitive student and administrative data, modify database records, or potentially gain unauthorized access to the school management system's backend infrastructure.

Affected Products

• itsourcecode School Management System 1.0
• Applications using the /ramonsys/user/index.php endpoint with vulnerable ID parameter handling

Discovery Timeline

• 2026-02-07 - CVE-2026-2073 published to NVD
• 2026-02-12 - Last updated in NVD database

Technical Details for CVE-2026-2073

Vulnerability Analysis

This SQL injection vulnerability arises from improper input validation in the School Management System's user index functionality. The affected endpoint at /ramonsys/user/index.php fails to properly sanitize or parameterize user-supplied input passed through the ID argument before incorporating it into SQL queries. This allows attackers to inject arbitrary SQL statements that are then executed against the database with the application's privileges.

The vulnerability is classified under 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). School management systems typically contain sensitive personally identifiable information (PII) including student records, grades, parent contact information, and administrative credentials, making this vulnerability particularly concerning from a data protection standpoint.

Root Cause

The root cause of this vulnerability is the lack of proper input sanitization and the use of dynamic SQL query construction. The application directly concatenates user-supplied input from the ID parameter into SQL queries without using parameterized queries or prepared statements. This classic secure coding mistake allows attackers to break out of the intended query structure and inject their own SQL commands.

Attack Vector

The attack can be performed remotely over the network without requiring any authentication or user interaction. An attacker can craft malicious HTTP requests to the vulnerable endpoint /ramonsys/user/index.php with specially crafted ID parameter values containing SQL injection payloads. These payloads can be used to extract database contents through UNION-based or blind SQL injection techniques, modify or delete records, or potentially escalate to command execution depending on the database configuration.

The vulnerability is exploited by submitting manipulated values in the ID parameter that include SQL metacharacters and statements. Common attack patterns include using single quotes to break string context, UNION SELECT statements to extract data from other tables, and boolean-based or time-based techniques for blind data extraction. For technical details and proof-of-concept information, refer to the GitHub Issue on CVE and VulDB CVE Analysis #344639.

Detection Methods for CVE-2026-2073

Indicators of Compromise

• Unusual SQL error messages appearing in web server logs referencing /ramonsys/user/index.php
• HTTP requests to the vulnerable endpoint containing SQL metacharacters such as single quotes, UNION statements, or OR 1=1 patterns in the ID parameter
• Database query logs showing unexpected SELECT statements accessing multiple tables or containing UNION operations
• Abnormal database read patterns or bulk data extraction attempts targeting student or user tables

Detection Strategies

• Deploy Web Application Firewall (WAF) rules to detect and block SQL injection patterns targeting the ID parameter
• Implement database activity monitoring to flag queries with suspicious patterns originating from the web application
• Configure intrusion detection systems (IDS) to alert on HTTP requests containing common SQL injection signatures
• Review web server access logs for requests to /ramonsys/user/index.php with encoded or suspicious parameter values

Monitoring Recommendations

• Enable verbose logging on the database server to capture all queries executed against student and user tables
• Monitor for authentication anomalies or new administrative accounts that may indicate successful exploitation
• Track network traffic patterns for unusual outbound data transfers that could indicate data exfiltration
• Implement real-time alerting for multiple failed database query attempts or SQL syntax errors

How to Mitigate CVE-2026-2073

Immediate Actions Required

• Restrict network access to the School Management System to trusted IP ranges only
• Implement WAF rules to block SQL injection attempts on the /ramonsys/user/index.php endpoint
• Disable or remove the vulnerable endpoint if not critical to operations until a patch is available
• Review database logs for evidence of prior exploitation and assess potential data exposure
• Apply the principle of least privilege to the database account used by the web application

Patch Information

No official vendor patch has been identified at the time of this analysis. Organizations using itsourcecode School Management System 1.0 should monitor the IT Source Code Resource website for security updates. In the absence of an official patch, implementing the workarounds and compensating controls described below is essential.

Workarounds

• Implement prepared statements or parameterized queries in the affected PHP file to properly handle user input
• Add server-side input validation to restrict the ID parameter to numeric values only
• Deploy a reverse proxy or WAF in front of the application with SQL injection detection rules enabled
• Consider isolating the School Management System on a segmented network with restricted internet access

# Configuration example - Apache ModSecurity WAF rule to block SQL injection on ID parameter
# Add to /etc/modsecurity/custom-rules.conf
SecRule ARGS:ID "@detectSQLi" \
    "id:100001,\
    phase:2,\
    deny,\
    status:403,\
    log,\
    msg:'SQL Injection attempt detected in ID parameter',\
    logdata:'Matched Data: %{MATCHED_VAR} found within %{MATCHED_VAR_NAME}'"