CVE-2025-6357 is a SQL Injection vulnerability identified in version 1.0 of the code-projects Simple Pizza Ordering System, specifically within the /paymentportal.php file. The vulnerability arises from improper sanitization or validation of the 'person' argument, which is directly incorporated into SQL queries without adequate parameterization or escaping. This flaw allows an unauthenticated remote attacker to inject malicious SQL code, potentially manipulating the backend database. Exploitation does not require any user interaction or privileges, making it accessible over the network without authentication. The vulnerability has been publicly disclosed, although no known exploits are currently reported in the wild. The CVSS 4.0 base score is 6.9 (medium severity), reflecting the ease of exploitation (network accessible, no authentication), but with limited impact on confidentiality, integrity, and availability (low impact on each). The attack vector is network-based, with low complexity and no user interaction required. The vulnerability could allow attackers to read, modify, or delete data within the database, potentially compromising customer information, order details, or payment records. However, the scope is limited to the affected application and its database, with no indication of broader system compromise or privilege escalation. The lack of available patches or mitigations at this time increases the risk for organizations using this software version. Given the nature of the application (pizza ordering system), the database likely contains sensitive customer data and transaction records, making the vulnerability a critical concern for data privacy and business continuity.

For European organizations using the Simple Pizza Ordering System 1.0, this vulnerability poses a significant risk to the confidentiality and integrity of customer data, including personal information and payment details. Successful exploitation could lead to unauthorized data disclosure, data tampering, or deletion, undermining customer trust and potentially violating GDPR regulations. The availability impact is limited but could disrupt order processing, affecting business operations and revenue. Given the public disclosure and ease of exploitation, attackers could leverage this vulnerability to conduct fraud, identity theft, or further pivot into internal networks if the application is connected to other systems. Small to medium-sized enterprises in the food service sector, which may rely on this software, are particularly vulnerable due to limited cybersecurity resources. The reputational damage and potential regulatory fines in Europe could be substantial if customer data is compromised. Additionally, the vulnerability could be exploited as part of a larger attack chain targeting supply chains or payment processing infrastructure, which are critical in European markets.

1. Immediate application of input validation and parameterized queries: Developers should refactor the /paymentportal.php code to use prepared statements or stored procedures, ensuring the 'person' parameter is never directly concatenated into SQL queries. 2. Implement Web Application Firewall (WAF) rules specifically targeting SQL injection patterns on the affected endpoint to provide an additional layer of defense. 3. Conduct a thorough code audit of the entire application to identify and remediate any other injection points or insecure coding practices. 4. Restrict database user permissions to the minimum necessary, limiting the potential damage from a successful injection. 5. Monitor application logs for unusual query patterns or repeated failed attempts targeting the 'person' parameter. 6. If possible, isolate the pizza ordering system network segment to reduce lateral movement risks. 7. Engage with the vendor or community to obtain or develop patches, and prioritize upgrading to a fixed version once available. 8. Educate staff on the risks and signs of exploitation attempts, and establish incident response procedures tailored to web application attacks. 9. Regularly back up the database and application data to enable recovery in case of data manipulation or deletion.