CVE-2026-4579: Simple Laundry System SQLi Vulnerability

CVE-2026-4579 Overview

A SQL injection vulnerability has been identified in code-projects Simple Laundry System version 1.0. This vulnerability affects the /viewdetail.php file within the Parameters Handler component, where the manipulation of the serviceId argument enables SQL injection attacks. The vulnerability is remotely exploitable over the network, and exploit details have been publicly disclosed, increasing the risk of active exploitation.

Critical Impact

Remote attackers can manipulate database queries through the serviceId parameter, potentially allowing unauthorized data access, modification, or deletion of database contents.

Affected Products

• code-projects Simple Laundry System 1.0
• /viewdetail.php - Parameters Handler component

Discovery Timeline

• 2026-03-23 - CVE-2026-4579 published to NVD
• 2026-03-23 - Last updated in NVD database

Technical Details for CVE-2026-4579

Vulnerability Analysis

This SQL injection vulnerability (classified as CWE-74: Improper Neutralization of Special Elements in Output Used by a Downstream Component) exists in the Simple Laundry System's view detail functionality. The application fails to properly sanitize user-supplied input in the serviceId parameter before incorporating it into SQL queries. This allows attackers to inject malicious SQL statements that are then executed by the database server.

The vulnerability is accessible remotely over the network without requiring authentication or user interaction, making it a straightforward attack vector. According to the disclosure, the exploit has been publicly documented, which significantly increases the likelihood of exploitation attempts against vulnerable installations.

Root Cause

The root cause of this vulnerability is improper input validation and lack of parameterized queries in the /viewdetail.php file. The serviceId parameter is directly concatenated into SQL queries without proper sanitization or escaping, allowing attackers to break out of the intended query structure and inject arbitrary SQL commands.

Attack Vector

The attack is conducted remotely over the network by sending crafted HTTP requests to the /viewdetail.php endpoint. An attacker manipulates the serviceId parameter to include SQL metacharacters and additional SQL statements.

The vulnerable endpoint accepts the serviceId parameter through HTTP GET or POST requests. Without proper input validation, an attacker can append SQL injection payloads such as single quotes, UNION statements, or stacked queries to extract sensitive data from the database, bypass authentication mechanisms, modify existing data, or potentially execute administrative operations on the database server.

For detailed technical information about this vulnerability, refer to the GitHub Issue Tracker Entry and the VulDB entry #352416.

Detection Methods for CVE-2026-4579

Indicators of Compromise

• Unusual HTTP requests to /viewdetail.php containing SQL metacharacters in the serviceId parameter (single quotes, double dashes, semicolons, UNION keywords)
• Database error messages appearing in web server logs indicating SQL syntax errors
• Unexpected database queries or access patterns in database audit logs
• Evidence of data exfiltration or unauthorized data modifications in database records

Detection Strategies

• Implement Web Application Firewall (WAF) rules to detect and block common SQL injection patterns in the serviceId parameter
• Enable detailed logging for the /viewdetail.php endpoint and monitor for suspicious parameter values
• Deploy database activity monitoring to detect unusual query patterns or unauthorized data access
• Use intrusion detection systems (IDS) with SQL injection signature rules

Monitoring Recommendations

• Configure alerts for HTTP requests containing SQL injection indicators targeting /viewdetail.php
• Monitor database logs for failed or unusual queries originating from the web application
• Set up anomaly detection for data access patterns that deviate from normal application behavior
• Review web server access logs regularly for reconnaissance activities targeting the vulnerable endpoint

How to Mitigate CVE-2026-4579

Immediate Actions Required

• Restrict access to the /viewdetail.php endpoint until a patch is applied
• Deploy a Web Application Firewall (WAF) with SQL injection protection rules
• Implement network-level access controls to limit exposure of the vulnerable application
• Review database user privileges to ensure the application uses least-privilege database accounts

Patch Information

No official vendor patch information is currently available in the NVD database for code-projects Simple Laundry System. Organizations should monitor the Code Projects Resource Hub for security updates. In the absence of an official patch, implementing the recommended workarounds and mitigations is critical.

Workarounds

• Implement input validation on the serviceId parameter to accept only numeric values
• Use parameterized queries (prepared statements) if modifying the source code is possible
• Deploy a reverse proxy or WAF to filter malicious input before it reaches the application
• Consider taking the application offline or restricting access to trusted IP addresses until a proper fix is available

# Example WAF rule for Apache ModSecurity to block SQL injection attempts
# Add to your ModSecurity configuration
SecRule ARGS:serviceId "@detectSQLi" \
    "id:1001,\
    phase:2,\
    deny,\
    status:403,\
    msg:'SQL Injection attempt detected in serviceId parameter',\
    tag:'CVE-2026-4579',\
    severity:'CRITICAL'"