CVE-2026-1443: Online Music Site 1.0 SQL Injection Flaw

CVE-2026-1443 Overview

A SQL injection vulnerability has been identified in code-projects Online Music Site version 1.0. The vulnerability exists in the /Administrator/PHP/AdminDeleteUser.php file, where improper handling of the ID argument allows attackers to inject malicious SQL queries. This flaw can be exploited remotely without authentication, potentially enabling unauthorized database access, data manipulation, or extraction of sensitive information.

Critical Impact

Remote attackers can exploit this SQL injection vulnerability to manipulate database queries, potentially extracting sensitive user data, modifying records, or compromising the entire database backend of the Online Music Site application.

Affected Products

• code-projects Online Music Site 1.0
• AdminDeleteUser.php component

Discovery Timeline

• 2026-01-26 - CVE CVE-2026-1443 published to NVD
• 2026-01-27 - Last updated in NVD database

Technical Details for CVE-2026-1443

Vulnerability Analysis

This SQL injection vulnerability (CWE-74: Improper Neutralization of Special Elements in Output Used by a Downstream Component) occurs due to insufficient input validation in the administrative user deletion functionality. The AdminDeleteUser.php script accepts an ID parameter that is directly incorporated into SQL queries without proper sanitization or parameterized query usage.

When processing user deletion requests, the application fails to validate or escape the ID parameter before constructing the SQL statement. This allows an attacker to craft malicious input containing SQL syntax that alters the intended query logic. The network-accessible nature of this endpoint means attackers can exploit this vulnerability remotely without requiring any authentication credentials.

Root Cause

The root cause of this vulnerability is the lack of proper input sanitization and the failure to use parameterized queries or prepared statements when handling the ID argument in the AdminDeleteUser.php file. The application directly concatenates user-supplied input into SQL queries, creating a classic SQL injection attack surface.

Attack Vector

The vulnerability can be exploited remotely via network access. An attacker can send specially crafted HTTP requests to the /Administrator/PHP/AdminDeleteUser.php endpoint with malicious SQL payload injected into the ID parameter. Since no authentication appears to be required and the complexity of exploitation is low, this attack can be launched with minimal prerequisites.

The exploit methodology involves manipulating the ID parameter to include SQL metacharacters and statements that modify the query's behavior. For example, an attacker could inject UNION-based payloads to extract data from other tables, boolean-based blind injection to enumerate database contents, or time-based techniques to exfiltrate information.

Additional technical details and proof-of-concept information can be found in the GitHub CVE Issue #1 and VulDB #342872.

Detection Methods for CVE-2026-1443

Indicators of Compromise

• Unusual HTTP requests to /Administrator/PHP/AdminDeleteUser.php containing SQL syntax characters such as single quotes, semicolons, or UNION keywords
• Web server logs showing anomalous ID parameter values with encoded or raw SQL injection patterns
• Database error messages exposed in HTTP responses indicating malformed SQL queries
• Unexpected database queries or access patterns in database audit logs

Detection Strategies

• Implement web application firewall (WAF) rules to detect SQL injection patterns in requests targeting AdminDeleteUser.php
• Monitor web server access logs for requests to the vulnerable endpoint with suspicious parameter values
• Deploy intrusion detection systems (IDS) with signatures for common SQL injection attack patterns
• Enable detailed database query logging to identify anomalous query structures

Monitoring Recommendations

• Configure real-time alerting for requests containing SQL injection indicators targeting administrative PHP endpoints
• Establish baseline metrics for normal administrative operations and alert on deviations
• Implement application-level logging to capture all inputs to the AdminDeleteUser.php script
• Monitor database connection pools for unusual activity patterns that may indicate exploitation attempts

How to Mitigate CVE-2026-1443

Immediate Actions Required

• Restrict network access to the /Administrator/PHP/AdminDeleteUser.php endpoint using firewall rules or web server configuration
• Implement input validation to ensure the ID parameter only accepts numeric values
• Deploy a web application firewall (WAF) with SQL injection protection rules
• Consider disabling the affected functionality until a proper fix is implemented

Patch Information

No official vendor patch has been identified for this vulnerability at the time of publication. Users should check Code Projects Security Resources for updates. Given the nature of the vulnerable application (code-projects educational resources), organizations using this software should prioritize implementing their own fixes or migrating to a more secure alternative.

For technical reference and additional context, consult the VulDB Submission #736967.

Workarounds

• Implement prepared statements or parameterized queries in the AdminDeleteUser.php file to properly handle the ID parameter
• Add server-side input validation to restrict the ID parameter to integer values only
• Restrict access to administrative endpoints using IP-based allowlisting or additional authentication layers
• Deploy network segmentation to limit exposure of the administrative interface to trusted networks only

# Example Apache .htaccess configuration to restrict access
<Files "AdminDeleteUser.php">
    Order Deny,Allow
    Deny from all
    Allow from 192.168.1.0/24
    # Add trusted IP ranges as needed
</Files>