CVE-2026-5564 Overview
A SQL Injection vulnerability has been identified in code-projects Simple Laundry System version 1.0. The vulnerability exists within the /searchguest.php file, specifically in the Parameter Handler component. Manipulation of the searchServiceId argument enables SQL injection attacks, allowing remote attackers to execute arbitrary SQL commands against the underlying database.
Critical Impact
Remote attackers can exploit this SQL injection vulnerability to read, modify, or delete database contents, potentially compromising sensitive guest information and laundry service records stored in the application's database.
Affected Products
- code-projects Simple Laundry System 1.0
- /searchguest.php Parameter Handler component
Discovery Timeline
- 2026-04-05 - CVE-2026-5564 published to NVD
- 2026-04-07 - Last updated in NVD database
Technical Details for CVE-2026-5564
Vulnerability Analysis
This SQL injection vulnerability resides in the /searchguest.php file of the Simple Laundry System application. The weakness stems from improper handling of the searchServiceId parameter, which is directly incorporated into SQL queries without adequate sanitization or parameterization. This allows attackers to inject malicious SQL code that gets executed by the database server.
The vulnerability is classified under CWE-74 (Improper Neutralization of Special Elements in Output Used by a Downstream Component), indicating that user-supplied input is not properly neutralized before being used in SQL query construction.
Root Cause
The root cause of this vulnerability is insufficient input validation and lack of parameterized queries in the Parameter Handler component. The application fails to properly sanitize or escape user-supplied input in the searchServiceId parameter before incorporating it into database queries. This allows specially crafted input containing SQL metacharacters to alter the intended query logic.
Attack Vector
The attack can be initiated remotely over the network without requiring authentication. An attacker can craft malicious HTTP requests containing SQL injection payloads in the searchServiceId parameter targeting the /searchguest.php endpoint.
The exploitation involves sending specially crafted values through the searchServiceId parameter that break out of the intended SQL query context. By injecting SQL syntax such as single quotes, UNION statements, or boolean-based payloads, attackers can manipulate query results, extract sensitive data, or potentially modify database contents.
The exploit has been made publicly available, increasing the risk of exploitation in the wild. Technical details and proof-of-concept information can be found in the GitHub Issue Discussion and VulDB Vulnerability #355334.
Detection Methods for CVE-2026-5564
Indicators of Compromise
- Unusual HTTP requests to /searchguest.php containing SQL metacharacters (single quotes, double dashes, UNION keywords) in the searchServiceId parameter
- Database error messages or unexpected application behavior when processing search requests
- Evidence of data exfiltration or unauthorized database queries in database logs
- Anomalous traffic patterns targeting the /searchguest.php endpoint
Detection Strategies
- Deploy Web Application Firewall (WAF) rules to detect and block common SQL injection patterns in request parameters
- Enable verbose database logging to capture and analyze executed queries for injection attempts
- Implement application-level logging to track all requests to /searchguest.php with their parameter values
- Configure intrusion detection systems (IDS) with signatures for SQL injection attack patterns
Monitoring Recommendations
- Monitor HTTP access logs for requests to /searchguest.php containing suspicious characters or SQL keywords
- Set up alerts for database errors that may indicate SQL injection attempts
- Review database audit logs for unauthorized SELECT, INSERT, UPDATE, or DELETE operations
- Track authentication and authorization failures that may indicate post-exploitation lateral movement
How to Mitigate CVE-2026-5564
Immediate Actions Required
- Restrict access to the /searchguest.php endpoint until a patch is available
- Implement input validation to reject requests containing SQL metacharacters in the searchServiceId parameter
- Deploy Web Application Firewall rules to filter malicious SQL injection payloads
- Consider taking the Simple Laundry System offline if it processes sensitive data
Patch Information
No official vendor patch has been identified for this vulnerability at the time of writing. Organizations using code-projects Simple Laundry System 1.0 should monitor the Code Projects Resource page for security updates and consider implementing the workarounds below.
Workarounds
- Implement prepared statements with parameterized queries in the /searchguest.php file to prevent SQL injection
- Add strict input validation to the searchServiceId parameter, allowing only expected numeric or alphanumeric values
- Deploy a Web Application Firewall (WAF) configured to block SQL injection attempts
- Restrict network access to the application to trusted IP addresses only
- Consider replacing the affected component with a secure alternative that properly sanitizes user input
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.
