CVE-2026-4319: Simple Food Order System SQLi Vulnerability

CVE-2026-4319 Overview

A SQL injection vulnerability has been identified in code-projects Simple Food Order System version 1.0. The vulnerability exists in the /routers/add-item.php file, where the price argument is not properly sanitized before being used in SQL queries. This allows attackers to manipulate SQL statements through the price parameter, potentially compromising the integrity, confidentiality, and availability of the backend database. The attack can be launched remotely without authentication, and the exploit has been publicly disclosed.

Critical Impact

Unauthenticated remote attackers can exploit this SQL injection vulnerability to extract sensitive data, modify database contents, or disrupt application availability by manipulating the price parameter in add-item.php.

Affected Products

• code-projects Simple Food Order System 1.0
• Applications using the vulnerable /routers/add-item.php component

Discovery Timeline

• 2026-03-17 - CVE-2026-4319 published to NVD
• 2026-03-18 - Last updated in NVD database

Technical Details for CVE-2026-4319

Vulnerability Analysis

This SQL injection vulnerability (classified under CWE-74: Improper Neutralization of Special Elements in Output Used by a Downstream Component) occurs due to insufficient input validation in the add-item.php file. The application fails to properly sanitize or parameterize user-supplied input in the price argument before incorporating it into SQL queries. This allows attackers to inject arbitrary SQL commands that are then executed by the database engine with the same privileges as the application's database connection.

The vulnerability is accessible over the network without requiring any authentication or user interaction. An attacker can craft malicious requests containing SQL injection payloads within the price parameter to extract database contents, modify records, or potentially escalate to further system compromise depending on the database configuration and privileges.

Root Cause

The root cause of this vulnerability is the lack of proper input sanitization and the absence of parameterized queries (prepared statements) in the /routers/add-item.php file. The price parameter is directly concatenated into SQL statements without any validation, escaping, or use of prepared statement bindings. This is a common vulnerability pattern in PHP applications that use legacy database access methods without security controls.

Attack Vector

The attack vector is network-based, requiring only HTTP access to the vulnerable endpoint. An attacker can exploit this vulnerability by sending specially crafted HTTP requests to /routers/add-item.php with malicious SQL payloads embedded in the price parameter. The attack does not require authentication or any specific privileges, making it exploitable by anonymous remote attackers.

The manipulation of the price argument allows for classic SQL injection techniques including UNION-based injection for data extraction, boolean-based blind injection, and time-based blind injection. Depending on the database permissions, attackers may be able to read sensitive data, modify existing records, delete data, or potentially execute system commands if the database supports extended stored procedures.

Technical details and proof-of-concept information can be found in the GitHub CVE Issue Discussion and VulDB #351363.

Detection Methods for CVE-2026-4319

Indicators of Compromise

• Unusual or malformed requests to /routers/add-item.php containing SQL syntax in the price parameter
• Database error messages appearing in application logs or responses indicating SQL syntax errors
• Unexpected database queries containing SQL injection keywords (UNION, SELECT, OR 1=1, etc.)
• Anomalous data extraction patterns or bulk data access from the database

Detection Strategies

• Deploy Web Application Firewall (WAF) rules to detect SQL injection patterns in HTTP request parameters
• Implement application-layer logging to capture all requests to /routers/add-item.php with full parameter values
• Configure database query logging to identify suspicious query patterns originating from the application
• Use Intrusion Detection Systems (IDS) with signatures for common SQL injection payloads

Monitoring Recommendations

• Monitor web server access logs for requests to add-item.php containing special characters (single quotes, double dashes, semicolons)
• Set up alerts for database errors that may indicate attempted SQL injection attacks
• Review database audit logs for unauthorized data access or modification operations
• Implement real-time monitoring of outbound data transfers that could indicate data exfiltration

How to Mitigate CVE-2026-4319

Immediate Actions Required

• Restrict network access to /routers/add-item.php to trusted IP addresses only until a patch is applied
• Implement Web Application Firewall rules to block SQL injection attempts targeting the price parameter
• Review database user permissions and apply principle of least privilege
• Enable comprehensive logging for all requests to the affected endpoint for forensic purposes

Patch Information

No official vendor patch has been released at the time of publication. Organizations using Simple Food Order System 1.0 should monitor the Code Projects Resource Hub for security updates. In the absence of an official patch, implementing the workarounds below is strongly recommended.

Additional technical details are available at VulDB CTI ID #351363.

Workarounds

• Modify the /routers/add-item.php file to use prepared statements with parameterized queries for all database operations
• Implement strict input validation on the price parameter to accept only numeric values
• Deploy a Web Application Firewall in front of the application to filter malicious requests
• Consider disabling or restricting access to the add-item functionality until proper fixes can be implemented

# Example: Restrict access to vulnerable endpoint via .htaccess
# Add to .htaccess in the /routers/ directory
<Files "add-item.php">
    Order Deny,Allow
    Deny from all
    Allow from 192.168.1.0/24
</Files>