CVE-2026-0575: Online Product Reservation SQL Injection

CVE-2026-0575 Overview

A SQL injection vulnerability has been identified in code-projects Online Product Reservation System 1.0. This security flaw impacts the Administrator Login component, specifically within the file /handgunner-administrator/adminlogin.php. Manipulation of the emailadd and pass parameters allows attackers to execute arbitrary SQL commands against the underlying database. The attack can be performed remotely over the network, and the exploit has been publicly disclosed.

Critical Impact

Unauthenticated attackers can bypass administrator authentication and potentially gain full access to the application database through SQL injection, leading to data theft, modification, or complete system compromise.

Affected Products

• code-projects Online Product Reservation System 1.0
• Administrator Login Component (/handgunner-administrator/adminlogin.php)

Discovery Timeline

• 2026-01-04 - CVE-2026-0575 published to NVD
• 2026-01-08 - Last updated in NVD database

Technical Details for CVE-2026-0575

Vulnerability Analysis

This SQL injection vulnerability exists in the administrator login functionality of the Online Product Reservation System. The vulnerable endpoint fails to properly sanitize user-supplied input in the authentication parameters before incorporating them into SQL queries. When a user submits login credentials through the emailadd and pass form fields, these values are directly concatenated into database queries without adequate input validation or parameterization.

The attack surface is significant because authentication endpoints are inherently exposed to unauthenticated users. An attacker can craft malicious SQL statements within the login fields to manipulate the backend database operations. This can result in authentication bypass, allowing unauthorized administrative access, or enable direct data extraction through error-based or blind SQL injection techniques.

The vulnerability is classified under CWE-74 (Improper Neutralization of Special Elements in Output Used by a Downstream Component), which encompasses injection flaws where untrusted data is sent to an interpreter as part of a command or query.

Root Cause

The root cause of this vulnerability is the lack of input sanitization and the use of dynamic SQL query construction in the authentication handler. The adminlogin.php script directly incorporates user-supplied values from the emailadd and pass parameters into SQL statements without using prepared statements, parameterized queries, or proper escaping mechanisms. This allows special SQL characters and syntax to be interpreted as part of the query structure rather than as literal data values.

Attack Vector

The vulnerability is exploitable remotely over the network without requiring authentication. An attacker can target the administrator login page at /handgunner-administrator/adminlogin.php and inject SQL syntax through the email address or password fields. Common attack techniques include:

The attacker submits crafted input containing SQL metacharacters such as single quotes, comment sequences (-- or #), and boolean logic (OR 1=1) to manipulate query logic. This can result in authentication bypass by causing the query to always return true, or data exfiltration through UNION-based injection or error-based techniques.

Technical details and proof of concept information are available in the GitHub CVE Documentation and the GitHub CVE Proof of Concept.

Detection Methods for CVE-2026-0575

Indicators of Compromise

• Unusual login attempts to /handgunner-administrator/adminlogin.php containing SQL syntax characters such as single quotes, double dashes, or semicolons
• Database error messages exposed in HTTP responses indicating SQL syntax errors
• Successful administrator logins from unfamiliar IP addresses or geographic locations
• Evidence of bulk data extraction or abnormal database query patterns in database logs

Detection Strategies

• Implement Web Application Firewall (WAF) rules to detect and block SQL injection payloads targeting login endpoints
• Monitor web server access logs for requests to adminlogin.php containing encoded or plaintext SQL injection patterns
• Configure database query logging and establish alerts for anomalous query structures or failed query attempts
• Deploy intrusion detection signatures for common SQL injection attack patterns in authentication forms

Monitoring Recommendations

• Enable detailed logging for all authentication attempts to the administrator panel
• Establish baseline traffic patterns for the administrative login endpoint and alert on deviations
• Implement rate limiting on the login endpoint to slow down automated injection testing
• Monitor for data exfiltration indicators such as unusually large database responses or outbound data transfers

How to Mitigate CVE-2026-0575

Immediate Actions Required

• Restrict access to the /handgunner-administrator/ directory using network-level controls or IP allowlisting
• Implement a Web Application Firewall with SQL injection protection rules in front of the vulnerable application
• Consider taking the administrator login offline until a patch can be applied
• Review database logs for evidence of prior exploitation and assess potential data exposure

Patch Information

At the time of publication, no official patch has been released by the vendor. Users of the Online Product Reservation System should monitor the Code Projects Resource Hub for security updates. Additional vulnerability details are tracked in VulDB #339459.

Workarounds

• Implement network-level access controls to restrict administrator login page access to trusted IP addresses only
• Deploy a reverse proxy or WAF with SQL injection filtering capabilities in front of the application
• If source code access is available, modify adminlogin.php to use prepared statements with parameterized queries for all database interactions
• Consider implementing additional authentication factors or CAPTCHA to reduce automated attack success

# Example: Apache .htaccess restriction for admin directory
# Place in /handgunner-administrator/.htaccess
<Files "adminlogin.php">
    Order Deny,Allow
    Deny from all
    Allow from 192.168.1.0/24
    Allow from 10.0.0.0/8
</Files>