CVE-2026-5554 Overview
A SQL injection vulnerability has been discovered in code-projects Concert Ticket Reservation System 1.0. This security flaw affects the Parameter Handler component within the file /ConcertTicketReservationSystem-master/process_search.php. By manipulating the searching argument, an attacker can inject malicious SQL commands that are executed by the underlying database. The attack can be initiated remotely without authentication, and the exploit has been publicly disclosed, increasing the risk of active exploitation.
Critical Impact
Remote attackers can exploit this SQL injection vulnerability to read, modify, or delete database contents, potentially compromising user data, ticket reservations, and authentication credentials stored in the Concert Ticket Reservation System.
Affected Products
- code-projects Concert Ticket Reservation System 1.0
- /ConcertTicketReservationSystem-master/process_search.php Parameter Handler component
Discovery Timeline
- 2026-04-05 - CVE CVE-2026-5554 published to NVD
- 2026-04-07 - Last updated in NVD database
Technical Details for CVE-2026-5554
Vulnerability Analysis
This vulnerability is classified under CWE-74 (Improper Neutralization of Special Elements in Output Used by a Downstream Component), commonly referred to as injection. The flaw exists in the search functionality of the Concert Ticket Reservation System where user-supplied input through the searching parameter is directly incorporated into SQL queries without proper sanitization or parameterization.
When a user submits a search request to process_search.php, the application constructs a database query using the raw input value. This allows an attacker to craft specially designed input containing SQL syntax that alters the intended query logic. The network-accessible nature of this vulnerability means any remote user with access to the web application can attempt exploitation without requiring prior authentication or user interaction.
Root Cause
The root cause of this vulnerability is the lack of input validation and the use of unsanitized user input in SQL query construction. The searching parameter is directly concatenated into SQL statements rather than using prepared statements or parameterized queries. This coding practice violates secure development principles and creates a direct path for SQL injection attacks.
Attack Vector
The attack vector is network-based, allowing remote exploitation through HTTP requests to the vulnerable process_search.php endpoint. An attacker can manipulate the searching parameter in a GET or POST request to inject arbitrary SQL commands. Since no authentication is required, any remote attacker with network access to the application can exploit this vulnerability.
The exploitation process involves:
- Identifying the vulnerable search endpoint at /ConcertTicketReservationSystem-master/process_search.php
- Crafting a malicious payload in the searching parameter containing SQL injection syntax
- Submitting the crafted request to extract data, bypass authentication, or modify database contents
Technical details and proof-of-concept information have been documented in the GitHub Issue Discussion and VulDB Vulnerability #355324.
Detection Methods for CVE-2026-5554
Indicators of Compromise
- Unusual SQL error messages appearing in web server logs or returned to users
- Unexpected database queries containing SQL keywords like UNION, SELECT, DROP, or comment sequences (--, /**/)
- Access logs showing requests to process_search.php with abnormally long or encoded searching parameter values
- Database audit logs revealing unauthorized data access or modification attempts
Detection Strategies
- Deploy Web Application Firewalls (WAF) with SQL injection detection rules targeting the searching parameter
- Implement application-level logging to capture all requests to process_search.php with full parameter values
- Configure database query logging to identify anomalous SQL patterns or syntax errors
- Use SentinelOne Singularity Platform to monitor for exploitation attempts and suspicious process behavior on web servers
Monitoring Recommendations
- Enable detailed access logging on web servers hosting the Concert Ticket Reservation System
- Monitor database connection pools for unusual activity spikes or error rates
- Set up alerts for HTTP responses containing SQL error messages
- Review authentication logs for evidence of successful bypass attempts following exploitation
How to Mitigate CVE-2026-5554
Immediate Actions Required
- Restrict network access to the Concert Ticket Reservation System to trusted IP addresses only
- Implement a Web Application Firewall rule to block requests containing SQL injection patterns in the searching parameter
- Consider temporarily disabling the search functionality in process_search.php until a patch is applied
- Review database access logs for any signs of prior exploitation
Patch Information
No official vendor patch has been identified at this time. Organizations using code-projects Concert Ticket Reservation System 1.0 should contact the vendor via Code Projects for remediation guidance. In the absence of an official fix, implementing the workarounds below is strongly recommended.
For additional vulnerability intelligence, refer to:
Workarounds
- Modify process_search.php to use prepared statements with parameterized queries instead of direct string concatenation
- Implement strict input validation on the searching parameter, allowing only alphanumeric characters and spaces
- Deploy a reverse proxy or WAF to filter malicious input before it reaches the application
- Apply database user privilege restrictions to limit the impact of successful SQL injection
# Configuration example - Apache ModSecurity WAF rule to block SQL injection attempts
SecRule ARGS:searching "@detectSQLi" \
"id:1001,\
phase:2,\
deny,\
status:403,\
msg:'SQL Injection attempt detected in searching parameter',\
log,\
auditlog"
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.
