CVE-2026-0584 identifies a SQL injection vulnerability in the Online Product Reservation System version 1.0 developed by code-projects. The flaw exists in the processing of the 'ID' parameter within the app/products/left_cart.php script, where insufficient input sanitization allows an attacker to inject arbitrary SQL commands. This vulnerability can be exploited remotely without requiring authentication or user interaction, making it accessible to a wide range of attackers. The injection can lead to unauthorized reading, modification, or deletion of database records, potentially exposing sensitive customer or product data and disrupting service availability. The CVSS 4.0 vector indicates network attack vector (AV:N), low attack complexity (AC:L), no privileges required (PR:L), no user interaction (UI:N), and low impact on confidentiality, integrity, and availability (VC:L, VI:L, VA:L). Although no active exploitation has been reported, the public availability of exploit code increases the likelihood of attacks. The absence of official patches necessitates immediate mitigation efforts by affected organizations. This vulnerability highlights the critical need for secure coding practices such as parameterized queries and rigorous input validation in web applications handling e-commerce transactions.

For European organizations, exploitation of this SQL injection vulnerability could lead to unauthorized access to sensitive customer data, including personal and payment information, thereby violating data protection regulations such as GDPR. Data integrity could be compromised by unauthorized modification or deletion of reservation records, potentially disrupting business operations and customer trust. Availability of the reservation system could also be impacted through database corruption or denial of service attacks. The financial and reputational damage from such breaches could be significant, especially for e-commerce and retail sectors relying on this system. Additionally, regulatory penalties for data breaches in Europe can be substantial. Organizations with limited security resources or lacking timely patch management processes are at higher risk. The remote and unauthenticated nature of the vulnerability increases its threat level, as attackers can exploit it without insider access or user interaction.

Since no official patches are currently available, European organizations should implement immediate compensating controls. These include applying strict input validation and sanitization on the 'ID' parameter to reject malicious payloads. Refactoring the vulnerable code to use prepared statements or parameterized queries will prevent SQL injection. Database user permissions should be minimized to restrict the application's ability to perform destructive operations. Web application firewalls (WAFs) can be configured to detect and block SQL injection attempts targeting the vulnerable endpoint. Regular security audits and code reviews should be conducted to identify similar vulnerabilities. Organizations should monitor logs for suspicious database queries or unusual application behavior. Finally, planning and testing for rapid deployment of patches once available is critical to reduce exposure time.