CVE-2025-13076 identifies a SQL injection vulnerability in the Responsive Hotel Site version 1.0 developed by code-projects. The vulnerability exists in an unspecified function within the /admin/usersetting.php file, where the 'usname' parameter is improperly sanitized, allowing an attacker to inject malicious SQL code. This injection flaw can be exploited remotely but requires the attacker to have high-level privileges (authentication) to access the vulnerable functionality. The vulnerability can lead to unauthorized reading, modification, or deletion of database records, impacting the confidentiality, integrity, and availability of the affected system's data. The CVSS 4.0 vector indicates no user interaction is needed, no scope change occurs, and the attack complexity is low, but the requirement for privileges reduces the overall severity to medium (5.1). Although no active exploits have been observed in the wild, a public exploit has been published, increasing the risk of exploitation by malicious actors. The vulnerability primarily affects organizations using this specific hotel management software, which is typically deployed in hospitality environments to manage user settings and administrative functions. The lack of available patches at the time of publication necessitates immediate mitigation through secure coding practices and access controls.

For European organizations, especially those in the hospitality sector using the Responsive Hotel Site software, this vulnerability poses a risk of unauthorized database access and manipulation. Attackers with administrative credentials could exploit the SQL injection to extract sensitive customer data, modify booking information, or disrupt service availability. This could lead to data breaches involving personal identifiable information (PII), financial loss, reputational damage, and regulatory penalties under GDPR. The impact is heightened in countries with large tourism industries where such software is more likely deployed. Additionally, compromised systems could serve as pivot points for further network intrusion. Although exploitation requires authenticated access, insider threats or compromised credentials could facilitate attacks. The medium severity rating suggests moderate urgency but should not be underestimated given the potential consequences in data-sensitive environments.

1. Apply vendor patches immediately once available to address the SQL injection vulnerability. 2. Until patches are released, restrict access to the /admin/usersetting.php interface to trusted administrators only, using network segmentation and strong authentication mechanisms such as multi-factor authentication (MFA). 3. Implement input validation and use parameterized queries or prepared statements in the application code to prevent SQL injection. 4. Conduct regular security audits and code reviews focusing on input handling in administrative modules. 5. Monitor logs for unusual database queries or access patterns indicative of exploitation attempts. 6. Educate administrators on the risks of credential compromise and enforce strong password policies. 7. Consider deploying Web Application Firewalls (WAF) with rules designed to detect and block SQL injection attempts targeting this parameter. 8. Maintain up-to-date backups to enable recovery in case of data integrity attacks.