CVE-2025-6821: Inventory Management System SQLi Flaw

CVE-2025-6821 Overview

A critical SQL injection vulnerability has been identified in Code-Projects Inventory Management System version 1.0. The vulnerability exists in the /php_action/createOrder.php file, where improper input validation allows attackers to inject malicious SQL queries. This flaw enables remote attackers to manipulate database operations without authentication, potentially compromising the integrity and confidentiality of stored inventory data.

Critical Impact

Remote attackers can exploit this SQL injection vulnerability to read, modify, or delete database contents, potentially leading to data exfiltration, unauthorized access to sensitive business information, and complete database compromise.

Affected Products

• Code-Projects Inventory Management System 1.0

Discovery Timeline

• June 28, 2025 - CVE-2025-6821 published to NVD
• July 1, 2025 - Last updated in NVD database

Technical Details for CVE-2025-6821

Vulnerability Analysis

This SQL injection vulnerability (CWE-89) affects the createOrder.php endpoint in the Inventory Management System. The vulnerability arises from insufficient input sanitization in the order creation functionality, allowing attackers to inject arbitrary SQL commands through user-controllable parameters. The exploitation requires no authentication and can be performed remotely over the network.

The vulnerability is classified under both CWE-74 (Improper Neutralization of Special Elements in Output Used by a Downstream Component) and CWE-89 (Improper Neutralization of Special Elements used in an SQL Command), indicating that user input is passed directly to SQL queries without proper escaping or parameterization.

Root Cause

The root cause of this vulnerability is the direct concatenation of user-supplied input into SQL queries within the /php_action/createOrder.php file. The application fails to implement prepared statements or parameterized queries, and lacks proper input validation and sanitization mechanisms. This allows specially crafted input containing SQL metacharacters to alter the intended query logic and execute arbitrary database commands.

Attack Vector

The attack can be initiated remotely over the network without requiring any authentication or user interaction. An attacker can craft malicious HTTP requests to the createOrder.php endpoint, embedding SQL injection payloads within the order parameters. The vulnerability allows for low-impact confidentiality, integrity, and availability breaches, enabling attackers to extract sensitive data, modify records, or disrupt database operations.

The exploitation methodology typically involves:

1. Identifying injectable parameters in the order creation form
2. Testing for SQL injection using common payloads like single quotes or boolean-based tests
3. Extracting database schema information using UNION-based or error-based techniques
4. Exfiltrating sensitive data or escalating privileges within the database

Technical details regarding the specific exploitation technique are available in the GitHub Issue on CVE and VulDB #314259.

Detection Methods for CVE-2025-6821

Indicators of Compromise

• Unusual or malformed HTTP requests targeting /php_action/createOrder.php containing SQL metacharacters such as single quotes, double dashes, or UNION statements
• Database error messages appearing in application logs or HTTP responses indicating SQL syntax errors
• Unexpected database queries or access patterns in database audit logs
• Anomalous data modifications in inventory or order tables

Detection Strategies

• Deploy Web Application Firewalls (WAF) with SQL injection detection rules to monitor and block malicious requests to the createOrder.php endpoint
• Implement application-level logging to capture all requests to PHP action files, particularly those involving database operations
• Configure database audit logging to detect unusual query patterns, failed authentication attempts, or privilege escalation activities
• Use intrusion detection systems (IDS) with signatures for common SQL injection attack patterns

Monitoring Recommendations

• Monitor web server access logs for requests containing SQL injection indicators such as UNION SELECT, OR 1=1, --, or encoded variants
• Set up alerts for database errors that may indicate injection attempts, including syntax errors or permission denied messages
• Track changes to critical database tables for unauthorized modifications
• Implement real-time monitoring of the /php_action/ directory for suspicious activity patterns

How to Mitigate CVE-2025-6821

Immediate Actions Required

• Restrict network access to the Inventory Management System to trusted IP addresses only until a patch is applied
• Implement Web Application Firewall rules to block SQL injection patterns targeting the vulnerable endpoint
• Review database permissions and limit the application's database user to minimum required privileges
• Enable comprehensive logging on both the web application and database to detect exploitation attempts

Patch Information

As of the last update on July 1, 2025, no official patch has been released by the vendor for this vulnerability. Organizations using Code-Projects Inventory Management System 1.0 should monitor the Code Projects website for security updates and consider implementing the workarounds described below until a fix is available.

Workarounds

• Implement input validation on the server side to reject requests containing SQL metacharacters before they reach the database layer
• Modify the createOrder.php file to use prepared statements with parameterized queries instead of direct string concatenation
• Deploy a reverse proxy or WAF in front of the application to filter malicious requests
• Consider taking the vulnerable endpoint offline or implementing additional authentication requirements until a proper fix can be deployed

# Example WAF rule to block SQL injection attempts (ModSecurity format)
SecRule REQUEST_URI "@contains /php_action/createOrder.php" \
    "id:1001,phase:2,deny,status:403,\
    chain"
SecRule ARGS "@rx (?i)(union.*select|insert.*into|delete.*from|drop\s+table|'|--)" \
    "t:none,t:urlDecodeUni,t:htmlEntityDecode"