CVE-2026-3709
SQL Injection in Simple Flight Ticket Booking System /register.php
Publication date: 2026-03-08
Last updated on: 2026-04-29
Assigner: VulDB
Description
Description
CVSS Scores
EPSS Scores
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Meta Information
Affected Vendors & Products
| Vendor | Product | Version / Range |
|---|---|---|
| carmelo | simple_flight_ticket_booking_system | 1.0 |
Helpful Resources
Exploitability
| CWE ID | Description |
|---|---|
| CWE-89 | The product constructs all or part of an SQL command using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the intended SQL command when it is sent to a downstream component. Without sufficient removal or quoting of SQL syntax in user-controllable inputs, the generated SQL query can cause those inputs to be interpreted as SQL instead of ordinary user data. |
| CWE-74 | The product constructs all or part of a command, data structure, or record using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify how it is parsed or interpreted when it is sent to a downstream component. |
Attack-Flow Graph
AI Powered Q&A
How does this vulnerability affect compliance with common standards and regulations (like GDPR, HIPAA)?:
I don't know
How can this vulnerability be detected on my network or system? Can you suggest some commands?
[{'type': 'paragraph', 'content': "This vulnerability can be detected by identifying the presence of the vulnerable application, specifically the Simple Flight Ticket Booking System version 1.0, and checking for the /register.php endpoint which is susceptible to SQL injection via the 'username' parameter."}, {'type': 'paragraph', 'content': 'One method to detect vulnerable targets is using Google dorking with queries such as "inurl:register.php" to find exposed instances of the application.'}, {'type': 'paragraph', 'content': "To test for the SQL injection vulnerability on your system, you can use common SQL injection testing commands or tools targeting the 'username' parameter in HTTP requests to /register.php. For example, using curl to send a crafted payload:"}, {'type': 'list_item', 'content': 'curl -X POST -d "username=\' OR \'1\'=\'1" http://target-site/register.php'}, {'type': 'list_item', 'content': 'Or use automated tools like sqlmap to test the endpoint: sqlmap -u "http://target-site/register.php" --data="username=test" --risk=3 --level=5'}, {'type': 'paragraph', 'content': 'These commands attempt to inject SQL code via the username parameter to verify if the system is vulnerable.'}] [4]
What immediate steps should I take to mitigate this vulnerability?
[{'type': 'paragraph', 'content': "Immediate mitigation steps include applying proper input validation and sanitization on the 'username' parameter and any other user inputs before incorporating them into SQL queries."}, {'type': 'paragraph', 'content': 'Specifically, use parameterized queries or prepared statements to prevent SQL injection attacks.'}, {'type': 'paragraph', 'content': "Additionally, for related input fields such as 'birthday', ensure that empty values are handled correctly (e.g., setting empty birthday inputs to NULL instead of empty strings) to avoid SQL errors."}, {'type': 'paragraph', 'content': 'If a patch or updated version of the software is available, apply it immediately. If not, consider replacing the affected software with a secure alternative.'}, {'type': 'paragraph', 'content': 'Restrict access to the vulnerable endpoint where possible and monitor logs for suspicious activity related to SQL injection attempts.'}] [3, 4]
Can you explain this vulnerability to me?
[{'type': 'paragraph', 'content': 'CVE-2026-3709 is a critical SQL injection vulnerability found in version 1.0 of the Simple Flight Ticket Booking System, specifically in the /register.php file.'}, {'type': 'paragraph', 'content': "The vulnerability arises because the application does not properly validate or sanitize the 'username' parameter (and other related inputs), allowing attackers to inject malicious SQL code."}, {'type': 'paragraph', 'content': 'This flaw enables attackers to manipulate SQL queries remotely without any authentication, potentially allowing unauthorized access to the database.'}, {'type': 'paragraph', 'content': 'Exploitation can lead to unauthorized retrieval, modification, or deletion of sensitive data.'}] [1, 2, 3, 4]
How can this vulnerability impact me? :
Exploiting this vulnerability allows attackers to perform unauthorized database operations such as extracting sensitive user information, modifying or deleting records, and potentially gaining full control over the database.
Because the attack can be launched remotely without authentication, it poses a significant security risk to the confidentiality, integrity, and availability of the affected system.
This can lead to data breaches, loss of data integrity, service disruption, and unauthorized access to sensitive information.