CVE-2026-5033 Overview
A SQL Injection vulnerability has been identified in code-projects Accounting System version 1.0. This vulnerability exists within the /view_costumer.php file's Parameter Handler component, where insufficient input validation on the cos_id parameter allows attackers to inject malicious SQL commands. The attack can be performed remotely over the network without requiring authentication, potentially allowing unauthorized access to sensitive database contents, data manipulation, or system compromise.
Critical Impact
Remote attackers can exploit this SQL injection vulnerability to extract, modify, or delete sensitive accounting data from the backend database without authentication.
Affected Products
- Sherlock Accounting System 1.0
- code-projects Accounting System 1.0
Discovery Timeline
- 2026-03-29 - CVE-2026-5033 published to NVD
- 2026-03-30 - Last updated in NVD database
Technical Details for CVE-2026-5033
Vulnerability Analysis
This vulnerability is classified as SQL Injection (CWE-89) with underlying Injection vulnerabilities (CWE-74). The vulnerable component resides in the /view_costumer.php file, specifically within the Parameter Handler functionality. When processing the cos_id parameter, the application fails to properly sanitize or parameterize user-supplied input before incorporating it into SQL queries.
The network-accessible attack vector combined with no required privileges or user interaction makes this vulnerability particularly concerning for organizations using this accounting system in production environments. Successful exploitation could compromise the confidentiality, integrity, and availability of financial data stored within the application's database.
Root Cause
The root cause of this vulnerability is improper input validation and the use of unsanitized user input directly in SQL query construction. The cos_id parameter in /view_costumer.php is not properly escaped, parameterized, or validated before being used in database queries. This allows attackers to manipulate the SQL query structure by injecting malicious SQL code through the parameter value.
Attack Vector
The attack can be executed remotely over the network by sending specially crafted HTTP requests to the /view_costumer.php endpoint. An attacker manipulates the cos_id parameter to include SQL injection payloads, which are then executed by the database server. This could enable the attacker to:
- Extract sensitive customer and financial data from the database
- Modify or delete existing records
- Potentially escalate privileges or execute system commands depending on database configuration
- Bypass authentication mechanisms to access restricted functionality
The vulnerability is publicly known, and exploit details have been disclosed, increasing the risk of opportunistic attacks against unpatched systems.
Detection Methods for CVE-2026-5033
Indicators of Compromise
- Unusual or malformed requests to /view_costumer.php containing SQL syntax in the cos_id parameter
- Database error messages appearing in web server logs indicating SQL syntax errors
- Unexpected database queries or data extraction patterns in database audit logs
- Signs of data exfiltration or unauthorized modifications to customer records
Detection Strategies
- Implement Web Application Firewall (WAF) rules to detect and block SQL injection patterns in the cos_id parameter
- Enable detailed logging on the web server to capture all requests to /view_costumer.php
- Configure database auditing to monitor for unusual query patterns or unauthorized data access
- Deploy intrusion detection systems (IDS) with signatures for common SQL injection attack patterns
Monitoring Recommendations
- Monitor web application logs for requests containing SQL keywords (SELECT, UNION, INSERT, DROP, etc.) in parameter values
- Set up alerts for database errors that may indicate injection attempts
- Track unusual data access patterns or bulk data retrieval from customer-related tables
- Review database query logs for anomalous or malformed queries originating from the web application
How to Mitigate CVE-2026-5033
Immediate Actions Required
- Restrict network access to the affected /view_costumer.php endpoint using firewall rules or access controls
- Implement input validation on the cos_id parameter to accept only expected numeric values
- Deploy a Web Application Firewall (WAF) with SQL injection protection rules
- Consider temporarily disabling the vulnerable functionality until a patch is applied
Patch Information
No official vendor patch information is currently available. Organizations should monitor the Code Projects Resource for updates and security advisories. Additional technical details about this vulnerability can be found in the GitHub CVE Issue and VulDB Vulnerability #353959.
Workarounds
- Implement prepared statements or parameterized queries in the vulnerable PHP code to prevent SQL injection
- Add server-side input validation to ensure cos_id only accepts integer values
- Deploy application-level filtering to sanitize all user input before database operations
- Restrict database user privileges used by the application to minimum necessary permissions
# Example input validation using PHP (recommended fix approach)
# Validate cos_id as integer before use in queries
# Use prepared statements with bound parameters
# Example .htaccess rule to restrict access:
<Files "view_costumer.php">
Require ip 192.168.1.0/24
</Files>
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.
