CVE-2025-10623 is a SQL Injection vulnerability identified in SourceCodester Hotel Reservation System version 1.0. The vulnerability exists in an unspecified function within the deleteuser.php file, where the argument 'ID' is improperly sanitized or validated. This flaw allows an unauthenticated remote attacker to manipulate the 'ID' parameter to inject arbitrary SQL commands into the backend database query. Exploiting this vulnerability could enable attackers to read, modify, or delete sensitive data stored in the database, potentially compromising user credentials, reservation details, or administrative information. The vulnerability requires no authentication or user interaction and can be exploited remotely over the network. The CVSS 4.0 base score is 6.9 (medium severity), reflecting the ease of exploitation (no privileges or user interaction required) but limited impact on confidentiality, integrity, and availability (all rated low to limited). No patches or official fixes have been published yet, and while public exploits exist, there are no confirmed reports of active exploitation in the wild. This vulnerability is critical for organizations using the affected version of the SourceCodester Hotel Reservation System, as it could lead to unauthorized data access or manipulation, impacting business operations and customer trust.

For European organizations operating hotels or hospitality services using SourceCodester Hotel Reservation System 1.0, this vulnerability poses a significant risk to the confidentiality and integrity of customer and operational data. Exploitation could lead to unauthorized disclosure of personal identifiable information (PII), including guest details and payment information, potentially violating GDPR requirements and resulting in regulatory penalties. Data integrity could also be compromised, allowing attackers to alter reservation records or user accounts, disrupting business operations and causing reputational damage. Although the availability impact is limited, the indirect effects of data breaches and operational disruptions could be substantial. Given the hospitality sector's reliance on trust and data privacy, European organizations must prioritize addressing this vulnerability to maintain compliance and customer confidence.

1. Immediate mitigation should include implementing input validation and parameterized queries or prepared statements in the deleteuser.php file to prevent SQL injection. 2. If source code access is available, review and sanitize all user inputs rigorously, especially the 'ID' parameter in deleteuser.php. 3. Deploy Web Application Firewalls (WAFs) with rules specifically designed to detect and block SQL injection attempts targeting this endpoint. 4. Monitor logs for suspicious activities related to deleteuser.php, such as unusual query patterns or repeated access attempts with malicious payloads. 5. Restrict direct internet access to administrative or sensitive endpoints where possible, using network segmentation and access controls. 6. Engage with the vendor or community to obtain or develop patches and apply them promptly once available. 7. Conduct security awareness training for developers and administrators on secure coding practices and vulnerability management. 8. Perform regular security assessments and penetration testing focusing on web application vulnerabilities to detect similar issues proactively.