CVE-2025-11401 is a SQL injection vulnerability identified in the SourceCodester Hotel and Lodge Management System version 1.0, specifically within the /pages/save_curr.php script. The vulnerability arises from improper handling of the 'currcode' parameter, which is susceptible to SQL injection due to lack of adequate input validation or use of parameterized queries. This flaw allows an unauthenticated remote attacker to manipulate SQL queries executed by the backend database, potentially enabling unauthorized data access, modification, or deletion. The vulnerability has a CVSS 4.0 base score of 5.3, indicating medium severity, with attack vector being network-based and no user interaction required. The exploit is publicly available, increasing the risk of exploitation despite no current reports of active attacks. The vulnerability impacts confidentiality, integrity, and availability to a limited extent, as the scope is confined to the affected system and the privilege required is low. The absence of patches or vendor advisories necessitates immediate defensive measures by users of this software. Given the critical role of hotel management systems in handling sensitive customer and operational data, exploitation could lead to data breaches, financial fraud, or operational disruptions.

For European organizations, especially those in the hospitality sector using SourceCodester Hotel and Lodge Management System 1.0, this vulnerability poses a tangible risk of unauthorized database access and manipulation. Potential impacts include exposure of sensitive customer information such as personal identification and payment details, which could lead to privacy violations and regulatory penalties under GDPR. Data integrity could be compromised, affecting reservation records and financial transactions, potentially causing operational disruptions and reputational damage. Availability could be affected if attackers execute destructive SQL commands or cause database corruption. The remote and unauthenticated nature of the exploit increases the attack surface, making it easier for threat actors to target multiple organizations. The publication of exploit code further elevates the risk of opportunistic attacks. European hospitality businesses, which often handle large volumes of personal data and financial transactions, must consider this vulnerability a priority to avoid compliance issues and financial losses.

Since no official patches are currently available, European organizations should implement immediate compensating controls. These include applying strict input validation and sanitization on the 'currcode' parameter, ideally using parameterized queries or prepared statements to prevent SQL injection. Restrict access to the /pages/save_curr.php endpoint through network segmentation, firewalls, or web application firewalls (WAFs) configured to detect and block SQL injection attempts. Conduct thorough code reviews and security testing of the application to identify and remediate similar vulnerabilities. Monitor logs for suspicious database query patterns or repeated access attempts to the vulnerable endpoint. If feasible, consider temporarily disabling or restricting the vulnerable functionality until a vendor patch is released. Additionally, ensure regular backups of the database are maintained to enable recovery in case of data corruption or loss. Educate development and IT teams about secure coding practices to prevent recurrence.