CVE-2026-5256: Simple Laundry System SQLi Vulnerability

CVE-2026-5256 Overview

A SQL injection vulnerability has been discovered in code-projects Simple Laundry System version 1.0. This security flaw affects the /modify.php file within the Parameter Handler component, where manipulation of the firstName argument enables SQL injection attacks. The vulnerability can be exploited remotely, making it a significant security concern for organizations running this application.

Critical Impact

Remote attackers can exploit this SQL injection vulnerability to manipulate database queries, potentially leading to unauthorized data access, data modification, or complete database compromise.

Affected Products

• code-projects Simple Laundry System 1.0
• /modify.php Parameter Handler component

Discovery Timeline

• 2026-04-01 - CVE-2026-5256 published to NVD
• 2026-04-01 - Last updated in NVD database

Technical Details for CVE-2026-5256

Vulnerability Analysis

This SQL injection vulnerability (CWE-74: Improper Neutralization of Special Elements in Output Used by a Downstream Component) exists in the Simple Laundry System's user modification functionality. The application fails to properly sanitize user-supplied input in the firstName 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 over the network without requiring any user interaction or special privileges, making it relatively straightforward to exploit. An attacker can craft malicious HTTP requests targeting the /modify.php endpoint with specially crafted firstName parameter values containing SQL syntax.

Root Cause

The root cause of this vulnerability is improper input validation and the absence of parameterized queries or prepared statements in the /modify.php file. When user input from the firstName parameter is directly concatenated into SQL queries without proper sanitization or escaping, it creates an injection point that attackers can exploit.

This type of vulnerability typically occurs when developers trust user input and construct SQL queries dynamically using string concatenation rather than using secure database access patterns.

Attack Vector

The attack is conducted over the network by sending crafted HTTP requests to the /modify.php endpoint. Attackers can manipulate the firstName parameter to include SQL metacharacters and commands that alter the intended query logic.

Typical exploitation scenarios include:

• Data Exfiltration: Using UNION-based injection to retrieve data from other tables
• Authentication Bypass: Manipulating WHERE clause conditions to bypass authentication checks
• Data Manipulation: Inserting, updating, or deleting records through stacked queries
• Information Disclosure: Extracting database schema information and sensitive data

The vulnerability has been publicly disclosed with exploit details available, as documented in the VulDB Vulnerability entry and the GitHub Issue Tracker.

Detection Methods for CVE-2026-5256

Indicators of Compromise

• Unusual database queries containing SQL metacharacters in the firstName field
• HTTP requests to /modify.php with suspicious payloads containing single quotes, UNION statements, or SQL comments
• Database error messages appearing in application logs or responses
• Unexpected data extraction or modification activities in database audit logs

Detection Strategies

• Deploy Web Application Firewall (WAF) rules to detect SQL injection patterns in the firstName parameter
• Monitor HTTP access logs for requests to /modify.php containing SQL injection signatures such as ', OR 1=1, UNION SELECT, or --
• Implement database query logging and alerting for anomalous query patterns
• Review application logs for database error messages that may indicate injection attempts

Monitoring Recommendations

• Enable detailed logging on the web server for all requests to /modify.php
• Configure intrusion detection systems (IDS) to alert on SQL injection attack patterns
• Set up database activity monitoring to detect unauthorized data access or exfiltration
• Implement real-time alerting for failed or suspicious database queries originating from the application

How to Mitigate CVE-2026-5256

Immediate Actions Required

• Restrict access to the /modify.php endpoint until a patch is available
• Implement input validation on the firstName parameter to allow only alphanumeric characters
• Deploy WAF rules to block SQL injection attempts targeting the vulnerable endpoint
• Review database privileges and implement least-privilege access for the application's database user

Patch Information

As of the last update on 2026-04-01, no official patch information has been released by code-projects for this vulnerability. Organizations should monitor the Code Projects Resource page for security updates.

For the latest vulnerability details and any available fixes, refer to:

• VulDB Vulnerability #354446
• GitHub Issue Tracker

Workarounds

• Implement parameterized queries or prepared statements in the application code for all database operations
• Apply strict input validation using allowlists for the firstName parameter
• Use stored procedures with proper input handling instead of dynamic SQL queries
• Deploy a reverse proxy or WAF with SQL injection protection rules in front of the application

# Example WAF rule configuration for ModSecurity
SecRule ARGS:firstName "@detectSQLi" \
    "id:1001,\
    phase:2,\
    block,\
    msg:'SQL Injection Attempt Detected in firstName parameter',\
    log,\
    auditlog,\
    severity:CRITICAL"