CVE-2026-3708 Overview
A SQL injection vulnerability has been discovered in code-projects Simple Flight Ticket Booking System 1.0. The impacted element is a function within the file /login.php. By manipulating the Username argument, an attacker can perform SQL injection attacks. This vulnerability can be exploited remotely, and exploit code has been released publicly, increasing the risk of active exploitation.
Critical Impact
Unauthenticated attackers can bypass authentication, extract sensitive database information, or potentially modify or delete data through SQL injection in the login functionality.
Affected Products
- Carmelo Simple Flight Ticket Booking System 1.0
Discovery Timeline
- 2026-03-08 - CVE CVE-2026-3708 published to NVD
- 2026-03-09 - Last updated in NVD database
Technical Details for CVE-2026-3708
Vulnerability Analysis
This SQL injection vulnerability affects the login functionality of the Simple Flight Ticket Booking System. The /login.php file fails to properly sanitize user-supplied input in the Username parameter before incorporating it into SQL queries. This allows attackers to inject arbitrary SQL commands that are executed by the backend database.
The vulnerability is classified under CWE-89 (SQL Injection) and CWE-74 (Improper Neutralization of Special Elements in Output Used by a Downstream Component), indicating a fundamental failure in input validation and output encoding practices.
Root Cause
The root cause of this vulnerability is improper input validation in the authentication mechanism. The /login.php script directly incorporates user-supplied input from the Username field into database queries without proper sanitization or the use of parameterized queries. This allows SQL metacharacters to be interpreted as part of the SQL command structure rather than as literal data.
Attack Vector
The attack can be initiated remotely over the network without requiring any authentication or user interaction. An attacker can craft malicious input in the Username field of the login form to:
- Bypass authentication controls entirely
- Extract sensitive information from the database
- Modify or delete database records
- Potentially escalate to further system compromise depending on database permissions
The vulnerability is accessible via the network through the web application's login interface. Since exploit code has been publicly released, the barrier to exploitation is significantly lowered.
Detection Methods for CVE-2026-3708
Indicators of Compromise
- Unusual login attempts containing SQL syntax characters such as single quotes ('), double dashes (--), or semicolons (;) in username fields
- Database error messages appearing in web server logs or application responses
- Unexpected database queries or query patterns in database audit logs
- Successful logins from unknown sources or with unusual timing patterns
Detection Strategies
- Implement Web Application Firewall (WAF) rules to detect and block SQL injection patterns in HTTP requests
- Monitor web server access logs for requests to /login.php containing suspicious characters or encoded SQL keywords
- Enable database query logging and alert on anomalous query structures or syntax errors
- Deploy SentinelOne Singularity for endpoint detection of post-exploitation activities
Monitoring Recommendations
- Configure real-time alerting for SQL injection attack signatures in web traffic
- Monitor for unexpected outbound data transfers that could indicate data exfiltration
- Review authentication logs for patterns indicative of automated SQL injection testing
- Implement database activity monitoring to detect unauthorized data access
How to Mitigate CVE-2026-3708
Immediate Actions Required
- Immediately restrict access to the Simple Flight Ticket Booking System from untrusted networks
- Implement a Web Application Firewall with SQL injection protection rules
- Review application logs for evidence of exploitation attempts
- Consider taking the application offline until patches can be applied
Patch Information
No official vendor patch has been identified in the available CVE data. Administrators should monitor the Code Projects Resource Hub for updates and patches. Additional technical details about this vulnerability can be found in the GitHub Issue Discussion and the VulDB Entry #349654.
Workarounds
- Use parameterized queries or prepared statements when modifying the source code directly
- Implement input validation to reject SQL metacharacters in the Username field
- Deploy a reverse proxy with SQL injection filtering capabilities in front of the application
- Restrict database user permissions to minimum required privileges to limit impact of successful exploitation
# Example: Block common SQL injection patterns using mod_security
# Add to Apache configuration or .htaccess
SecRule ARGS:Username "@rx (\%27)|(\')|(\-\-)|(\%23)|(#)" \
"id:1001,phase:2,deny,status:403,msg:'SQL Injection Attempt Blocked'"
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.
