CVE-2025-11479 identifies a SQL injection vulnerability in the SourceCodester Wedding Reservation Management System version 1.0. The flaw resides in the insertReservation function within the function.php file, where the 'number' parameter is improperly sanitized, allowing attackers to inject malicious SQL code. This vulnerability can be exploited remotely without requiring authentication or user interaction, making it accessible to a wide range of threat actors. The SQL injection could enable attackers to read, modify, or delete sensitive reservation data stored in the backend database, potentially leading to data breaches or disruption of service. The vulnerability has a CVSS 4.0 base score of 6.9, categorized as medium severity, reflecting the moderate impact on confidentiality, integrity, and availability with low attack complexity and no privileges required. Although no exploits have been observed in the wild yet, the public disclosure increases the risk of exploitation. The absence of official patches necessitates immediate mitigation through secure coding practices such as input validation and use of prepared statements. Organizations relying on this system should also audit database permissions to limit the potential damage from exploitation.

For European organizations, the impact of this vulnerability could be significant, particularly for businesses in the wedding and event management sector that use the affected software. Exploitation could lead to unauthorized access to personal and payment information of clients, resulting in privacy violations and potential regulatory penalties under GDPR. Data integrity could be compromised, causing incorrect reservation details or loss of critical booking data, which may disrupt business operations and damage reputation. Availability may also be affected if attackers execute destructive SQL commands, leading to downtime or service interruptions. The medium severity rating suggests a moderate but tangible risk, especially given the remote and unauthenticated nature of the attack vector. Organizations with limited cybersecurity resources or lacking timely patch management processes are particularly vulnerable. Additionally, the public disclosure of the vulnerability may attract opportunistic attackers targeting smaller or less-secure wedding service providers across Europe.

1. Immediately review and apply any available patches or updates from SourceCodester for the Wedding Reservation Management System. 2. If patches are unavailable, implement input validation and sanitization on all user-supplied inputs, especially the 'number' parameter in the insertReservation function. 3. Refactor the code to use parameterized queries or prepared statements to prevent SQL injection. 4. Conduct a thorough audit of database user permissions to ensure the application operates with the least privilege necessary, limiting the impact of any potential injection. 5. Monitor application logs and database activity for unusual queries or access patterns indicative of exploitation attempts. 6. Consider deploying web application firewalls (WAFs) with rules tailored to detect and block SQL injection payloads targeting this specific vulnerability. 7. Educate developers and administrators on secure coding practices and the importance of timely vulnerability remediation. 8. Regularly back up database contents and test restoration procedures to minimize downtime and data loss in case of an attack.