CVE-2025-13203 identifies a SQL injection vulnerability in the Simple Cafe Ordering System version 1.0 developed by code-projects. The vulnerability resides in the /addmem.php script, where the studentnum parameter is improperly sanitized, allowing attackers to inject malicious SQL code. This injection flaw enables remote attackers to manipulate backend database queries without requiring authentication or user interaction, potentially leading to unauthorized data disclosure, data modification, or even complete compromise of the database. The vulnerability is exploitable over the network, increasing its attack surface. The CVSS 4.0 base score is 6.9, reflecting a medium severity due to the ease of exploitation (no privileges or user interaction needed) but limited impact scope (confidentiality, integrity, and availability impacts are low to limited). Although no known exploits are currently active in the wild, public availability of exploit code raises the risk of future attacks. The affected software is a PHP-based ordering system commonly used in small cafes or educational environments, which may store sensitive customer or student data. The lack of official patches or vendor advisories necessitates immediate attention from users to implement input validation and parameterized queries to mitigate the risk.

For European organizations, especially small businesses, educational institutions, or cafes using the Simple Cafe Ordering System, this vulnerability poses a risk of unauthorized access to sensitive customer or student data, including personal identifiers and order information. Exploitation could lead to data breaches, reputational damage, and potential regulatory penalties under GDPR due to improper data protection. Additionally, attackers could alter or delete order data, disrupting business operations and causing financial losses. Since the vulnerability allows remote exploitation without authentication, attackers can target exposed systems directly, increasing the likelihood of compromise. The medium severity indicates that while the impact is not catastrophic, it is significant enough to warrant prompt remediation to avoid escalation or lateral movement within networks. European entities relying on similar PHP-based web applications may also face analogous risks if similar coding practices are present.

To mitigate CVE-2025-13203, organizations should immediately audit the Simple Cafe Ordering System installations and restrict external access to the /addmem.php endpoint where possible. Developers must implement strict input validation and sanitization on the studentnum parameter, preferably using prepared statements or parameterized queries to prevent SQL injection. If source code modification is not feasible, deploying a Web Application Firewall (WAF) with SQL injection detection rules can provide a temporary protective layer. Regularly monitoring logs for suspicious database query patterns or unusual access attempts is recommended. Organizations should also consider isolating the affected system within segmented network zones to limit potential lateral movement. Since no official patches are available, organizations should engage with the vendor or community for updates and consider migrating to more secure ordering systems if remediation is delayed. Finally, ensuring backups of critical data are current will aid recovery if exploitation occurs.