CVE-2026-30530 identifies a SQL Injection vulnerability in the SourceCodester Online Food Ordering System version 1.0. The flaw exists in the Actions.php file within the save_customer action, where the 'username' parameter is not properly sanitized before being used in SQL queries. This improper input validation allows an attacker to craft malicious SQL statements that can be executed by the backend database. SQL Injection vulnerabilities are critical because they can lead to unauthorized data retrieval, modification, or deletion, and in some cases, full system compromise if the database server has elevated privileges. The vulnerability does not require authentication or user interaction, increasing its risk profile. Although no known exploits have been reported in the wild and no patches are currently available, the vulnerability is publicly disclosed and thus could be targeted by attackers. The lack of a CVSS score means severity must be estimated based on impact and exploitability factors. The affected software is a niche online food ordering system, which may limit the scope but still poses a significant risk to affected organizations. Proper mitigation involves sanitizing inputs, using prepared statements or parameterized queries, and applying secure coding practices to prevent injection attacks.

The impact of this vulnerability can be severe for organizations using the affected online food ordering system. Successful exploitation could allow attackers to bypass authentication, extract sensitive customer data such as usernames and potentially other personal information, modify or delete database records, and disrupt service availability. This could lead to data breaches, loss of customer trust, regulatory penalties, and operational downtime. Since the vulnerability allows direct injection of SQL commands without authentication, attackers can automate exploitation at scale, increasing the risk of widespread compromise. Organizations handling payment or personal data through this system are particularly at risk of financial fraud and identity theft. Additionally, attackers could leverage this vulnerability as a foothold to pivot into other parts of the network, escalating the overall security risk.

To mitigate this vulnerability, organizations should immediately implement strict input validation and sanitization for all user-supplied data, especially the 'username' parameter in the save_customer action. Employing parameterized queries or prepared statements is critical to prevent SQL Injection attacks. Code review and security testing should be conducted to identify and remediate similar vulnerabilities throughout the application. If possible, isolate the database with least privilege access controls to limit the impact of any successful injection. Monitoring database logs for suspicious queries can help detect exploitation attempts. Organizations should also stay alert for official patches or updates from the vendor and apply them promptly once available. As a longer-term measure, adopting secure coding standards and conducting regular security assessments will reduce the risk of injection vulnerabilities.