Executive Summary

[{'type': 'paragraph', 'content': 'CVE-2026-3148 is a critical SQL injection vulnerability found in SourceCodester Simple and Nice Shopping Cart Script version 1.0, specifically in the /signup.php file.'}, {'type': 'paragraph', 'content': "The vulnerability arises from improper handling of the 'username' parameter sent via POST requests, which is directly embedded into SQL queries without adequate input validation or sanitization."}, {'type': 'paragraph', 'content': 'This allows attackers to inject malicious SQL code, enabling unauthorized manipulation of database queries.'}, {'type': 'paragraph', 'content': 'Exploitation does not require any authentication and can be initiated remotely.'}, {'type': 'paragraph', 'content': 'Types of SQL injection demonstrated include boolean-based blind, error-based, and time-based blind injections.'}] [1, 2, 3]

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Impact Analysis

Exploitation of this vulnerability can lead to unauthorized database access, data leakage, modification or deletion of data, full system control, and potential service disruption.

Attackers can manipulate SQL queries to perform unauthorized actions, compromising the confidentiality, integrity, and availability of the affected system.

Since the vulnerability can be exploited remotely without authentication, it poses a high risk to affected systems.

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Compliance Impact

I don't know

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Detection Guidance

[{'type': 'paragraph', 'content': 'This vulnerability can be detected by testing the /signup.php endpoint for SQL injection vulnerabilities in the username parameter, which is sent via POST requests.'}, {'type': 'paragraph', 'content': 'Common detection methods include using automated tools like sqlmap with high risk and level settings targeting MySQL databases to test for boolean-based blind, error-based, and time-based blind SQL injection.'}, {'type': 'list_item', 'content': 'Example sqlmap command: sqlmap -u "http://target.com/signup.php" --data="username=test&otherparam=value" --risk=3 --level=5 --dbms=MySQL'}, {'type': 'list_item', 'content': "Manual testing payloads include injecting SQL code into the username parameter, such as: username=-8309' OR 3422=3422 OR 'vIzX'='mXPz (boolean-based blind)"}, {'type': 'list_item', 'content': "Error-based payload example: username=1111' OR (SELECT 2654 FROM(SELECT COUNT(*),CONCAT(0x7171706b71,(SELECT (ELT(2654=2654,1))),0x717a6a7671,FLOOR(RAND(0)*2))x FROM INFORMATION_SCHEMA.PLUGINS GROUP BY x)a) OR 'tcxX'='MLnP"}, {'type': 'list_item', 'content': "Time-based blind payload example: username=1111' AND (SELECT 3226 FROM (SELECT(SLEEP(5)))jVsD) OR 'YtHr'='qRyL"}, {'type': 'paragraph', 'content': 'Additionally, attackers may use Google dorking such as searching for inurl:signup.php to identify vulnerable targets.'}] [1, 3]

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Mitigation Strategies

Immediate mitigation steps include replacing the affected product with an alternative, as no known countermeasures or patches have been documented.

If replacement is not immediately possible, implement the following measures:

• Use prepared statements with parameter binding to separate SQL code from user input, preventing SQL injection.
• Implement strict input validation and filtering to ensure the username parameter conforms to expected formats.
• Minimize database user permissions by avoiding use of high-privilege accounts (e.g., root or admin) for routine operations.
• Conduct regular security audits of code and systems to detect and fix vulnerabilities promptly.

Taking these steps will help protect system security and data integrity until a full fix or replacement is applied.

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