CVE-2026-0576 identifies a SQL injection vulnerability in the Online Product Reservation System version 1.0 developed by code-projects. The vulnerability resides in the Parameter Handler component, specifically within the /handgunner-administrator/prod.php file. Attackers can manipulate input parameters such as cat, price, name, model, or serial to inject malicious SQL code. This injection flaw allows unauthorized remote attackers to execute arbitrary SQL queries on the backend database without requiring authentication or user interaction. The vulnerability is classified with a CVSS 4.0 base score of 6.9 (medium severity), reflecting its ease of exploitation (network accessible, no privileges needed) and moderate impact on confidentiality, integrity, and availability. The exploit is publicly available, increasing the risk of exploitation. The vulnerability could lead to unauthorized data disclosure, data modification, or denial of service by corrupting database operations. No official patches have been linked yet, so mitigation relies on input validation, parameterized queries, or restricting access to the vulnerable endpoint.

For European organizations using the affected Online Product Reservation System 1.0, this vulnerability could result in unauthorized access to sensitive customer and product data, leading to data breaches and loss of customer trust. Attackers could manipulate or delete reservation records, disrupting business operations and causing financial losses. The integrity of the reservation system could be compromised, affecting inventory management and sales processes. Additionally, exploitation could enable attackers to pivot within the network if the database contains further sensitive information. Given the remote exploitability and lack of authentication requirements, the threat surface is broad. Organizations in sectors with high reliance on e-commerce and online product reservations, such as retail and manufacturing, are particularly at risk. The public availability of exploit code increases the urgency for mitigation to prevent opportunistic attacks.

European organizations should immediately assess their exposure to the affected Online Product Reservation System version 1.0. Since no official patches are currently available, organizations should implement the following mitigations: 1) Employ strict input validation and sanitization on all parameters (cat, price, name, model, serial) to block malicious SQL payloads. 2) Refactor the application code to use parameterized queries or prepared statements to prevent SQL injection. 3) Restrict access to the /handgunner-administrator/prod.php endpoint through network segmentation, firewall rules, or VPN access to limit exposure. 4) Monitor web application logs for suspicious parameter manipulation attempts indicative of exploitation. 5) Consider deploying Web Application Firewalls (WAFs) with rules targeting SQL injection patterns specific to this vulnerability. 6) Plan and prioritize upgrading to a patched or newer version of the product once available. 7) Conduct security awareness training for developers and administrators to recognize and remediate injection flaws.