CVE-2026-1545: School Management System 1.0 SQLi Vulnerability

CVE-2026-1545 Overview

A SQL Injection vulnerability has been identified in itsourcecode School Management System 1.0. The affected element is an unknown function of the file /course/index.php. Executing a manipulation of the argument ID can lead to SQL injection. The attack may be performed from remote. The exploit has been made available to the public and could be used for attacks.

Critical Impact

Remote attackers can exploit this SQL injection vulnerability to extract, modify, or delete sensitive data from the school management database, potentially compromising student records, financial information, and administrative credentials.

Affected Products

• itsourcecode School Management System 1.0
• Installations with exposed /course/index.php endpoint
• Systems without input validation on the ID parameter

Discovery Timeline

• 2026-01-28 - CVE-2026-1545 published to NVD
• 2026-01-29 - Last updated in NVD database

Technical Details for CVE-2026-1545

Vulnerability Analysis

This vulnerability is classified under CWE-74 (Improper Neutralization of Special Elements in Output Used by a Downstream Component), which encompasses injection flaws. The vulnerable component resides in the /course/index.php file of the School Management System application. When user-supplied data is passed through the ID parameter, it is not properly sanitized before being incorporated into SQL queries, allowing attackers to inject malicious SQL statements.

School management systems typically contain highly sensitive data including student personal information, grades, financial records, and administrative credentials. Successful exploitation could enable an attacker to bypass authentication, exfiltrate the entire database, modify records, or potentially achieve further system compromise through database server functionality.

Root Cause

The root cause of this vulnerability is insufficient input validation and lack of parameterized queries in the /course/index.php file. The ID parameter is directly concatenated into SQL queries without proper sanitization or the use of prepared statements. This classic SQL injection pattern allows attackers to break out of the intended query structure and execute arbitrary SQL commands against the backend database.

Attack Vector

The attack vector is network-based, requiring no authentication or user interaction. An attacker can remotely craft malicious HTTP requests to the /course/index.php endpoint with specially crafted values in the ID parameter. The vulnerability can be exploited through a standard web browser or automated tools. Since the exploit has been publicly disclosed, the barrier to exploitation is significantly lowered.

The attack methodology involves manipulating the ID parameter with SQL injection payloads such as boolean-based blind injection, time-based blind injection, or UNION-based injection techniques to extract data or manipulate database contents. Given the public availability of the exploit, attackers can leverage existing proof-of-concept code to automate attacks against vulnerable installations.

Detection Methods for CVE-2026-1545

Indicators of Compromise

• Unusual SQL error messages in web application logs referencing /course/index.php
• HTTP requests to /course/index.php containing SQL keywords or special characters in the ID parameter
• Anomalous database queries or unexpected data access patterns originating from the web application
• Evidence of data exfiltration attempts or unauthorized database modifications

Detection Strategies

• Deploy Web Application Firewall (WAF) rules to detect SQL injection patterns targeting the /course/index.php endpoint
• Implement database activity monitoring to identify suspicious query patterns or unauthorized data access
• Configure intrusion detection systems to alert on SQL injection attack signatures in HTTP traffic
• Enable verbose logging on the web application and database to capture potential exploitation attempts

Monitoring Recommendations

• Monitor web server access logs for requests to /course/index.php with suspicious parameter values
• Set up alerts for database errors or exceptions that may indicate SQL injection attempts
• Implement real-time security monitoring using SentinelOne Singularity XDR to detect post-exploitation activities
• Review application logs regularly for patterns consistent with automated SQL injection scanning tools

How to Mitigate CVE-2026-1545

Immediate Actions Required

• Restrict access to the /course/index.php endpoint through network-level controls until a patch is available
• Implement input validation and whitelisting for the ID parameter to allow only numeric values
• Deploy a Web Application Firewall with SQL injection protection rules
• Review and audit database permissions to minimize potential impact from successful exploitation

Patch Information

No official vendor patch has been published at this time. Administrators should monitor the ITSourceCode website for security updates and patch releases. Additional technical details and vulnerability discussion can be found in the GitHub Issue CVE-33 and VulDB entry #343229.

Workarounds

• Implement prepared statements or parameterized queries in the /course/index.php file to prevent SQL injection
• Add server-side input validation to ensure the ID parameter contains only expected numeric values
• Deploy network segmentation to limit exposure of the vulnerable application to trusted networks only
• Consider temporarily disabling or restricting access to course-related functionality until proper remediation is applied

# Example Apache .htaccess rule to restrict access to vulnerable endpoint
<Files "index.php">
    <If "%{QUERY_STRING} =~ /['\";]|UNION|SELECT|INSERT|UPDATE|DELETE|DROP|--/i">
        Require all denied
    </If>
</Files>

# Alternative: Block access entirely until patched
# <Location "/course/index.php">
#     Require ip 192.168.1.0/24
# </Location>