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 execute arbitrary SQL commands on the backend database without authentication or user interaction. The impact includes unauthorized data disclosure, data modification, or potential full compromise of the database depending on the underlying database permissions. The vulnerability has a CVSS 4.0 score of 6.9, reflecting medium severity due to its remote exploitability and lack of required privileges, but limited by the scope and impact vectors. Although the exploit code is publicly available, there are no confirmed active exploits reported. No official patches or updates have been released, requiring organizations to implement manual mitigations such as input validation and prepared statements. The vulnerability affects only version 1.0 of the product, which is likely used in small-scale or educational cafe ordering environments. The lack of secure coding practices in this legacy system highlights the risk of SQL Injection in web applications handling user input without proper sanitization.

For European organizations, exploitation of this vulnerability could lead to unauthorized access to sensitive customer and business data stored in the Simple Cafe Ordering System database. This may result in data breaches, loss of customer trust, and potential regulatory penalties under GDPR due to inadequate protection of personal data. Additionally, attackers could manipulate or delete order records, disrupting business operations and causing financial loss. Small cafes, educational institutions, or local businesses using this system are particularly at risk, as they may lack dedicated cybersecurity resources to detect or respond to such attacks. The remote and unauthenticated nature of the exploit increases the likelihood of opportunistic attacks, especially in countries with widespread use of this software or similar legacy systems. The medium severity indicates a significant but not critical threat, emphasizing the need for timely remediation to prevent escalation or lateral movement within affected networks.

Since no official patches are currently available, organizations should immediately implement the following mitigations: 1) Conduct a thorough code review of /addmem.php and all input handling routines to identify and sanitize all user inputs, especially the studentnum parameter. 2) Replace dynamic SQL queries with parameterized queries or prepared statements to prevent injection. 3) Employ web application firewalls (WAFs) with SQL Injection detection rules to block malicious payloads targeting this endpoint. 4) Restrict database user permissions to the minimum necessary to limit the impact of any injection attack. 5) Monitor application logs and database queries for unusual activity indicative of exploitation attempts. 6) If feasible, upgrade or replace the Simple Cafe Ordering System with a more secure and actively maintained solution. 7) Educate staff on the risks of legacy software and the importance of timely updates. These targeted actions go beyond generic advice by focusing on the specific vulnerable component and practical compensating controls.