CVE-2025-11473 is a SQL injection vulnerability identified in version 1.0 of the SourceCodester Hotel and Lodge Management System, specifically within the /edit_curr.php script. The vulnerability arises from improper sanitization of the 'currsymbol' parameter, which is directly used in SQL queries without adequate validation or parameterization. This allows remote attackers to inject malicious SQL code, potentially enabling unauthorized access to or modification of the backend database. The attack vector is network accessible (AV:N), requires no authentication (PR:N), and no user interaction (UI:N), making exploitation straightforward. The vulnerability impacts confidentiality, integrity, and availability to a limited extent (VC:L, VI:L, VA:L), as attackers could extract sensitive data or alter records related to currency symbols or other financial data managed by the system. The CVSS 4.0 base score is 6.9, reflecting a medium severity level. Although no known exploits are currently active in the wild, the public disclosure of the exploit details increases the risk of exploitation. The lack of vendor-provided patches necessitates immediate mitigation efforts by users. The vulnerability is particularly critical for hospitality organizations relying on this system for financial and operational management, as exploitation could lead to data breaches 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 significant risk to the confidentiality and integrity of sensitive financial and operational data. Exploitation could lead to unauthorized data disclosure, manipulation of currency-related information, and potential disruption of hotel management operations. This could result in financial losses, reputational damage, and regulatory compliance issues under GDPR due to exposure of personal or financial data. The ease of remote exploitation without authentication increases the threat level, making it a viable target for cybercriminals aiming to compromise hospitality infrastructure. Additionally, compromised systems could be leveraged as pivot points for further attacks within the network. The medium severity rating suggests moderate but actionable risk, warranting prompt attention to prevent escalation.

1. Immediately review and sanitize all inputs to the /edit_curr.php script, especially the 'currsymbol' parameter, using strict input validation techniques. 2. Implement parameterized queries or prepared statements to prevent SQL injection attacks. 3. Conduct a comprehensive code audit of the entire application to identify and remediate similar injection flaws. 4. If possible, isolate the affected system from public networks until a patch or fix is applied. 5. Monitor logs for suspicious SQL query patterns or unusual database activity indicative of exploitation attempts. 6. Engage with the vendor or community to obtain or develop patches addressing this vulnerability. 7. Educate development and IT teams on secure coding practices to prevent future injection vulnerabilities. 8. Consider deploying Web Application Firewalls (WAF) with custom rules to detect and block SQL injection attempts targeting this parameter. 9. Regularly back up critical data to enable recovery in case of data corruption or loss. 10. Update incident response plans to include steps for handling SQL injection incidents.