CVE-2026-5560 Overview
A SQL Injection vulnerability has been identified in PHPGurukul Online Shopping Portal Project version 2.1. The vulnerability exists in the /payment-method.php file within the Parameter Handler component. Attackers can exploit this flaw by manipulating the paymethod argument to inject malicious SQL commands, potentially compromising database integrity and exposing sensitive information. This vulnerability can be initiated remotely, and exploit details have been made publicly available.
Critical Impact
Remote attackers can exploit this SQL injection vulnerability to execute arbitrary SQL commands against the database, potentially leading to unauthorized data access, data manipulation, or complete database compromise.
Affected Products
- PHPGurukul Online Shopping Portal Project 2.1
- Payment Method Component (/payment-method.php)
- Parameter Handler (paymethod argument)
Discovery Timeline
- 2026-04-05 - CVE-2026-5560 published to NVD
- 2026-04-07 - Last updated in NVD database
Technical Details for CVE-2026-5560
Vulnerability Analysis
This vulnerability is classified under CWE-74 (Improper Neutralization of Special Elements in Output Used by a Downstream Component), commonly known as Injection. The flaw resides in the payment processing functionality of the Online Shopping Portal, specifically within the payment-method.php file. The application fails to properly sanitize user-supplied input to the paymethod parameter before incorporating it into SQL queries.
The network-accessible nature of this vulnerability means attackers can exploit it remotely without requiring physical access to the target system. The exploitation requires low-privilege authentication, suggesting that an attacker needs some level of access to the application, such as a registered user account, to trigger the injection point.
Successful exploitation enables attackers to read sensitive data from the database, modify or delete records, and potentially escalate privileges within the application. In e-commerce contexts, this could expose customer payment information, order histories, and user credentials.
Root Cause
The root cause of this vulnerability is insufficient input validation and lack of parameterized queries in the payment-method.php file. The paymethod parameter is directly concatenated into SQL statements without proper sanitization or the use of prepared statements. This allows attackers to break out of the intended SQL context and inject their own malicious SQL commands.
Attack Vector
The attack can be executed remotely over the network. An authenticated attacker sends a crafted HTTP request to the /payment-method.php endpoint with a malicious paymethod parameter value containing SQL injection payloads. The application processes this input without adequate validation, allowing the injected SQL to execute against the backend database.
The injection point in the paymethod parameter accepts payment method selections, which should be validated against a whitelist of acceptable values. Instead, the application passes user input directly to the database query, creating the injection opportunity.
Detection Methods for CVE-2026-5560
Indicators of Compromise
- Unusual SQL error messages appearing in application logs or responses from /payment-method.php
- Anomalous database queries containing SQL syntax in the paymethod parameter
- Unexpected database read/write operations originating from the web application
- Authentication or access anomalies following requests to the payment processing endpoint
Detection Strategies
- Implement web application firewall (WAF) rules to detect SQL injection patterns in HTTP parameters
- Monitor application logs for SQL syntax errors and unusual query patterns targeting payment-method.php
- Deploy database activity monitoring to flag unusual queries containing UNION, SELECT, or other injection keywords
- Use intrusion detection systems (IDS) with SQL injection signature detection capabilities
Monitoring Recommendations
- Enable detailed logging for the /payment-method.php endpoint and associated database operations
- Set up alerts for multiple failed or anomalous requests to the payment processing functionality
- Implement rate limiting on payment-related endpoints to slow potential automated exploitation
- Regularly audit database access logs for unauthorized queries or data exfiltration patterns
How to Mitigate CVE-2026-5560
Immediate Actions Required
- Restrict access to /payment-method.php until a patch or workaround is implemented
- Implement input validation to whitelist acceptable paymethod values
- Deploy a web application firewall (WAF) with SQL injection protection enabled
- Review database user permissions to limit the web application account to minimum required privileges
Patch Information
As of the last update on 2026-04-07, no official patch has been released by PHPGurukul for this vulnerability. Organizations using the affected software should monitor the PHP Gurukul Blog for security updates. Additional technical details and community discussion are available through the GitHub Issue Discussion and VulDB Vulnerability #355330.
Workarounds
- Replace dynamic SQL with prepared statements and parameterized queries in the affected file
- Implement strict input validation that only accepts predefined payment method values
- Use stored procedures with proper parameter binding for database operations
- Add additional authentication requirements for accessing payment processing functionality
- Consider temporarily disabling the payment method selection feature until proper remediation is in place
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.
