CVE-2025-15127 identifies a SQL injection vulnerability in the FantasticLBP Hotels_Server product, specifically within the /controller/api/Room.php endpoint. The vulnerability arises due to insufficient sanitization of the hotelId parameter, allowing attackers to inject malicious SQL code remotely without authentication or user interaction. This injection can manipulate backend database queries, potentially exposing sensitive hotel booking data, customer information, or enabling unauthorized data modification and deletion. The product operates on a rolling release model, complicating version tracking and patch management, and the vendor has not issued any response or patch following early disclosure. The vulnerability has been publicly disclosed, increasing the risk of exploitation despite no current known active exploits. The CVSS 4.0 vector indicates a network-based attack with low complexity and no required privileges, impacting confidentiality, integrity, and availability to a limited extent. This vulnerability is critical for organizations relying on FantasticLBP Hotels_Server for managing hotel room bookings and related services, as exploitation could lead to data breaches, service interruptions, or reputational damage. The lack of vendor response necessitates immediate defensive measures by users of the software.

For European organizations, the impact of this vulnerability can be significant, especially for those in the hospitality and travel sectors using FantasticLBP Hotels_Server. Exploitation could lead to unauthorized access to sensitive customer data such as personal identification, booking details, and payment information, violating GDPR and other data protection regulations. Integrity of booking data could be compromised, leading to fraudulent bookings or cancellations, disrupting business operations and customer trust. Availability impacts, while limited, could still result in service outages or degraded performance if attackers execute denial-of-service style SQL queries. The public disclosure and absence of vendor patches increase the urgency for European entities to implement mitigations to avoid potential regulatory penalties, financial losses, and reputational harm. Additionally, attackers could leverage this vulnerability as a foothold for further network intrusion or lateral movement within affected organizations.

Given the lack of vendor patches, European organizations should implement immediate compensating controls. First, apply strict input validation and sanitization on the hotelId parameter at the application or web server level to prevent malicious SQL payloads. Deploy Web Application Firewalls (WAFs) with custom rules to detect and block SQL injection patterns targeting the vulnerable endpoint. Conduct thorough code reviews and consider temporary disabling or restricting access to the /controller/api/Room.php API if feasible. Monitor database logs and network traffic for unusual queries or access patterns indicative of exploitation attempts. Employ database-level protections such as least privilege access controls and query parameterization where possible. Organizations should also prepare incident response plans specific to SQL injection attacks and maintain up-to-date backups to enable recovery from potential data tampering. Engage with the vendor continuously for updates and consider alternative software solutions if the vendor remains unresponsive.