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The vulnerability CVE-2026-3746 exists in SourceCodester Simple Responsive Tourism Website 1.0 due to improper neutralization of special elements used in an SQL command . The issue is located in the login functionality, specifically within the file `/tourism/classes/Login.php` when handling the `f=login` action. The application fails to sanitize the ‘Username’ parameter supplied by the user during the login POST request . An attacker can manipulate this input to inject arbitrary SQL code, which is then executed by the backend database. Because the application does not use parameterized queries, the injected SQL commands become part of the query string, allowing attackers to bypass authentication or extract sensitive data from the database. The attack can be initiated remotely without requiring any authentication, and a working exploit has been publicly disclosed, increasing the risk of active exploitation .
dailycve form:
Platform: SourceCodester
Version: 1.0
Vulnerability : Sql injection
Severity: MEDIUM
date: 03/08/2026
Prediction: April 2026
What Undercode Say:
Analytics:
The vulnerability can be detected by monitoring web server logs for unusual SQL characters in requests to the login endpoint. Use `grep` to find potential injection attempts.
Example: Search for SQLi patterns in access logs
sudo grep -E "username=.('|--|union|select)" /var/log/apache2/access.log | grep "/tourism/classes/Login.php"
How Exploit:
An attacker can exploit this by crafting a malicious POST request to the login page. The payload below tricks the SQL query into always returning true, bypassing authentication.
Example curl command for exploitation curl -X POST http://localhost/tourism/classes/Login.php?f=login \ -d "username=admin' OR '1'='1' -- -&password=anything"
Protection from this CVE:
The primary protection is to implement prepared statements and parameterized queries. A virtual patch can also be applied using a Web Application Firewall (WAF) like ModSecurity to block malicious patterns.
Example ModSecurity rule to block common SQLi patterns in the username parameter SecRule ARGS:username "@detectSQLi" \ "id:100002,\ phase:2,\ block,\ msg:'SQL Injection Attempt in Login'"
Impact:
Successful exploitation allows remote attackers to bypass authentication controls and gain unauthorized access to the application backend. It can also lead to the extraction of sensitive database contents, including user credentials and personal information, potentially resulting in a complete compromise of the web application’s data confidentiality .
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Sources:
Reported By: nvd.nist.gov
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