CVE-2026-1535: Online Music Site 1.0 SQLi Vulnerability

CVE-2026-1535 Overview

A SQL Injection vulnerability has been identified in code-projects Online Music Site version 1.0. The vulnerability affects the /Administrator/PHP/AdminReply.php file, where improper handling of the ID argument allows attackers to inject malicious SQL commands. This flaw can be exploited remotely without authentication, potentially allowing unauthorized access to sensitive database information, data modification, or other malicious activities.

Critical Impact

Remote attackers can exploit this SQL Injection vulnerability to manipulate database queries, potentially extracting sensitive user data, bypassing authentication mechanisms, or modifying database contents. The exploit has been publicly disclosed and may be actively used.

Affected Products

• code-projects Online Music Site 1.0
• /Administrator/PHP/AdminReply.php component

Discovery Timeline

• 2026-01-28 - CVE-2026-1535 published to NVD
• 2026-01-29 - Last updated in NVD database

Technical Details for CVE-2026-1535

Vulnerability Analysis

This vulnerability stems from improper neutralization of special elements used in SQL commands (CWE-74: Injection). The affected application fails to properly sanitize user-supplied input in the ID parameter before incorporating it into SQL queries. This creates an attack surface where malicious actors can craft specially formatted input to manipulate the underlying database queries.

The network-accessible nature of this vulnerability means attackers do not require local access to the target system. The attack can be executed remotely with low complexity and requires no user interaction or prior authentication, making it particularly dangerous for publicly accessible installations of the Online Music Site application.

Root Cause

The root cause of CVE-2026-1535 is insufficient input validation and lack of parameterized queries in the AdminReply.php file. The ID argument is directly concatenated or interpolated into SQL query strings without proper sanitization or escaping of special characters. This allows attackers to break out of the intended query structure and inject arbitrary SQL commands.

Attack Vector

The attack is conducted over the network by sending crafted HTTP requests to the vulnerable AdminReply.php endpoint. An attacker manipulates the ID parameter to include SQL metacharacters and malicious SQL statements. Since the application does not implement prepared statements or adequate input filtering, the injected SQL code is executed directly against the database.

The vulnerability allows for various SQL injection techniques including UNION-based attacks for data extraction, boolean-based blind injection for inferring database structure, and potentially time-based blind injection for scenarios where direct output is not available. Additional details about the vulnerability can be found in the GitHub Issue Discussion and VulDB #343221 Details.

Detection Methods for CVE-2026-1535

Indicators of Compromise

• Unusual or malformed requests to /Administrator/PHP/AdminReply.php containing SQL keywords such as UNION, SELECT, DROP, or INSERT
• Web server logs showing requests with encoded SQL injection payloads in the ID parameter
• Database error messages exposed in HTTP responses indicating query syntax errors
• Unexpected database query patterns or access to sensitive tables from the web application context

Detection Strategies

• Implement Web Application Firewall (WAF) rules to detect and block SQL injection patterns targeting the ID parameter
• Deploy intrusion detection systems (IDS) with signatures for common SQL injection attack patterns
• Enable detailed logging on web servers and database servers to capture suspicious query activity
• Configure SentinelOne Singularity platform to monitor for anomalous process behavior and network connections from web application servers

Monitoring Recommendations

• Monitor HTTP request logs for anomalous patterns in requests to administrative PHP endpoints
• Set up alerts for database errors or exceptions that may indicate injection attempts
• Track database query execution times for anomalies that could indicate time-based blind SQL injection attacks
• Review access logs for repeated requests to AdminReply.php from single IP addresses

How to Mitigate CVE-2026-1535

Immediate Actions Required

• Restrict network access to the /Administrator/PHP/ directory to trusted IP addresses only
• Implement a Web Application Firewall (WAF) with SQL injection detection rules as a temporary protective measure
• Consider taking the administrative interface offline until a patch can be applied
• Review and audit all database accounts used by the application for minimum necessary privileges

Patch Information

No official vendor patch has been released at the time of this publication. Organizations using code-projects Online Music Site 1.0 should monitor the Code Projects website for security updates. Given the public disclosure of this vulnerability, immediate implementation of mitigating controls is strongly recommended.

Workarounds

• Implement input validation on the ID parameter to accept only numeric values
• Deploy prepared statements with parameterized queries in the affected AdminReply.php file
• Use a WAF to filter and block malicious SQL injection payloads at the network perimeter
• Restrict database user permissions to read-only access where write operations are not required

# Example Apache .htaccess to restrict access to admin directory
<Directory "/var/www/html/Administrator">
    Order Deny,Allow
    Deny from all
    Allow from 192.168.1.0/24
    Allow from 10.0.0.0/8
</Directory>