CVE-2026-26713: Simple Food Order System SQLi Flaw

CVE-2026-26713 Overview

A critical SQL Injection vulnerability has been identified in code-projects Simple Food Order System v1.0. The vulnerability exists in the /food/routers/cancel-order.php endpoint, allowing unauthenticated attackers to execute arbitrary SQL commands against the underlying database. This web application vulnerability enables complete database compromise through network-accessible attack vectors without requiring any user interaction.

Critical Impact

Unauthenticated attackers can exploit this SQL Injection flaw to extract, modify, or delete sensitive data from the application database, potentially compromising user credentials, order information, and other confidential business data.

Affected Products

• Carmelo Simple Food Order System version 1.0
• code-projects Simple Food Order System v1.0

Discovery Timeline

• 2026-03-02 - CVE-2026-26713 published to NVD
• 2026-03-03 - Last updated in NVD database

Technical Details for CVE-2026-26713

Vulnerability Analysis

This SQL Injection vulnerability (CWE-89) affects the cancel-order.php endpoint in the Simple Food Order System application. The vulnerability allows attackers to manipulate SQL queries by injecting malicious input through the network interface. Since the flaw requires no authentication or privileges to exploit, any remote attacker with network access to the vulnerable application can potentially compromise the entire database backend.

SQL Injection vulnerabilities of this nature typically arise when user-supplied input is directly concatenated into SQL queries without proper sanitization or parameterized queries. The affected endpoint likely processes order cancellation requests and fails to adequately validate or escape input parameters before incorporating them into database queries.

Root Cause

The root cause of this vulnerability is improper input validation and the failure to use parameterized queries or prepared statements in the /food/routers/cancel-order.php file. User-controlled input is directly incorporated into SQL statements, allowing attackers to break out of the intended query structure and execute arbitrary SQL commands.

Attack Vector

The attack is network-based and can be executed remotely without authentication. An attacker can craft malicious HTTP requests to the cancel-order.php endpoint, injecting SQL syntax into vulnerable parameters. This could enable various attack scenarios including:

• Data Exfiltration: Extracting sensitive information such as user credentials, payment details, and order history
• Data Manipulation: Modifying or deleting records in the database
• Authentication Bypass: Circumventing login mechanisms by manipulating authentication queries
• Privilege Escalation: Potentially gaining administrative access to the application

The vulnerability is exploited by sending specially crafted input to the vulnerable parameter that breaks out of the expected SQL query context. For detailed technical information about the exploitation method, refer to the GitHub SQL Injection Report.

Detection Methods for CVE-2026-26713

Indicators of Compromise

• Unusual or malformed HTTP requests to /food/routers/cancel-order.php containing SQL syntax characters such as single quotes, double dashes, or UNION keywords
• Database error messages in application logs indicating syntax errors or unexpected query behavior
• Unexpected data modifications or deletions in the order management database tables
• Access logs showing sequential requests with varying SQL injection payloads targeting the cancel-order endpoint

Detection Strategies

• Deploy Web Application Firewalls (WAF) with SQL Injection detection rules monitoring the /food/routers/cancel-order.php endpoint
• Implement application-layer logging to capture and analyze all requests containing suspicious SQL keywords or special characters
• Configure database activity monitoring to detect unusual query patterns, bulk data exports, or unauthorized schema access
• Enable verbose error logging on the application server while ensuring error details are not exposed to end users

Monitoring Recommendations

• Monitor web server access logs for patterns indicative of SQL injection attempts, including encoded characters and UNION-based attacks
• Set up alerts for database query anomalies such as unusual execution times, unexpected result set sizes, or queries accessing sensitive tables
• Implement real-time security information and event management (SIEM) correlation rules for SQL injection attack patterns
• Regularly audit database access logs for unauthorized read or write operations on sensitive tables

How to Mitigate CVE-2026-26713

Immediate Actions Required

• Restrict network access to the vulnerable /food/routers/cancel-order.php endpoint using firewall rules or access control lists until a patch is applied
• Deploy a Web Application Firewall with SQL injection protection rules in blocking mode for the affected endpoint
• Review and audit any data that may have been accessed or modified through this vulnerability
• Consider temporarily disabling the order cancellation functionality if it is not business-critical

Patch Information

At the time of publication, no official vendor patch has been released for this vulnerability. Organizations using the affected Simple Food Order System should monitor the vendor's official channels for security updates. For technical details about the vulnerability, refer to the GitHub SQL Injection Report.

Workarounds

• Implement input validation and sanitization on the server-side to reject requests containing SQL special characters or keywords
• Modify the application code to use parameterized queries or prepared statements instead of string concatenation for SQL query construction
• Apply the principle of least privilege to the database user account used by the application, restricting permissions to only necessary operations
• Deploy network segmentation to limit database server accessibility from untrusted network segments

# Example: Block access to vulnerable endpoint using Apache .htaccess
# Add to .htaccess in the web root directory
<Files "cancel-order.php">
    Order deny,allow
    Deny from all
    # Allow only from trusted internal network
    Allow from 192.168.1.0/24
</Files>