CVE-2026-2691 Overview
A SQL injection vulnerability has been discovered in itsourcecode Event Management System version 1.0. The vulnerability exists in the /admin/manage_register.php file, where improper handling of the ID parameter allows attackers to inject malicious SQL statements. This vulnerability can be exploited remotely without authentication, potentially allowing attackers to access, modify, or delete sensitive database information.
Critical Impact
Remote attackers can exploit this SQL injection vulnerability to compromise the underlying database, potentially leading to unauthorized data access, data manipulation, or complete database compromise.
Affected Products
- itsourcecode Event Management System 1.0
- Web applications using the affected /admin/manage_register.php component
Discovery Timeline
- 2026-02-19 - CVE-2026-2691 published to NVD
- 2026-02-19 - Last updated in NVD database
Technical Details for CVE-2026-2691
Vulnerability Analysis
This vulnerability falls under the category of SQL Injection (CWE-74: Improper Neutralization of Special Elements in Output Used by a Downstream Component). The affected file /admin/manage_register.php fails to properly sanitize user-supplied input in the ID parameter before incorporating it into SQL queries. This lack of input validation allows attackers to inject arbitrary SQL commands that are then executed by the database server.
The vulnerability is accessible over the network and requires no authentication or user interaction to exploit. The public disclosure of this exploit increases the risk of opportunistic attacks against systems running the vulnerable software version.
Root Cause
The root cause of this vulnerability is the improper handling of user input in the ID parameter within the /admin/manage_register.php file. The application directly incorporates user-supplied data into SQL queries without adequate sanitization, parameterization, or use of prepared statements. This allows SQL metacharacters to be interpreted as part of the query structure rather than as data values.
Attack Vector
This vulnerability can be exploited remotely over the network. An attacker can craft malicious HTTP requests containing SQL injection payloads in the ID parameter of requests to /admin/manage_register.php. Since no authentication is required, any remote attacker with network access to the application can attempt exploitation.
The attack typically involves manipulating the ID parameter to include SQL syntax that alters the intended query behavior. Attackers may use techniques such as UNION-based injection, boolean-based blind injection, or time-based blind injection to extract data or manipulate database contents.
For detailed technical information about this vulnerability, refer to the GitHub Issue for CVE-40 or the VulDB entry #346491.
Detection Methods for CVE-2026-2691
Indicators of Compromise
- Unusual or malformed requests to /admin/manage_register.php containing SQL syntax in the ID parameter
- Database error messages appearing in application logs or responses
- Unexpected database query patterns or execution of administrative SQL commands
- Evidence of data exfiltration or unauthorized database access in audit logs
Detection Strategies
- Deploy Web Application Firewall (WAF) rules to detect and block SQL injection patterns in HTTP requests
- Monitor application and web server logs for requests containing SQL keywords or special characters in the ID parameter
- Implement database activity monitoring to detect anomalous query patterns or unauthorized data access
- Use intrusion detection systems (IDS) with signatures for SQL injection attack patterns
Monitoring Recommendations
- Enable detailed logging for the /admin/manage_register.php endpoint
- Configure alerts for database errors or exceptions that may indicate injection attempts
- Monitor for unusual data access patterns or bulk data extraction from the database
- Review access logs for requests from unexpected IP addresses targeting administrative endpoints
How to Mitigate CVE-2026-2691
Immediate Actions Required
- Restrict network access to the /admin/manage_register.php endpoint until a patch is available
- Implement Web Application Firewall (WAF) rules to block SQL injection attempts targeting the ID parameter
- Consider disabling or removing the vulnerable Event Management System if it is not critical to operations
- Audit database access logs for any signs of prior exploitation
Patch Information
No official vendor patch has been identified in the available vulnerability data. Organizations using itsourcecode Event Management System 1.0 should monitor the IT Source Code Blog for security updates. In the absence of an official patch, implementing compensating controls is essential.
Additional technical details and community discussion can be found at the VulDB submission #754240.
Workarounds
- Implement input validation to sanitize the ID parameter, allowing only numeric values
- Use prepared statements or parameterized queries if modifying the application code is feasible
- Deploy a reverse proxy or WAF with SQL injection protection in front of the application
- Restrict access to administrative endpoints using IP whitelisting or VPN requirements
- Consider using a database account with minimal privileges for the application to limit the impact of successful exploitation
# Example: Apache mod_rewrite rule to block suspicious ID parameter values
# Add to .htaccess or Apache configuration
RewriteEngine On
RewriteCond %{QUERY_STRING} (union|select|insert|delete|drop|update|;|'|") [NC]
RewriteRule ^admin/manage_register\.php$ - [F,L]
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.
