CVE-2025-13075 is a SQL injection vulnerability identified in the Responsive Hotel Site version 1.0 developed by code-projects. The vulnerability resides in the /admin/usersettingdel.php file, where the 'eid' parameter is improperly sanitized, allowing attackers to inject malicious SQL code. This injection flaw enables remote attackers to manipulate backend database queries, potentially extracting, modifying, or deleting sensitive data. The vulnerability does not require user interaction but does require the attacker to have high privileges (PR:H), indicating that some level of authentication or elevated access is necessary before exploitation. The CVSS 4.0 vector indicates network attack vector (AV:N), low attack complexity (AC:L), no user interaction (UI:N), and partial impacts on confidentiality, integrity, and availability (VC:L, VI:L, VA:L). The exploit code has been made public, increasing the risk of exploitation, although no active widespread attacks have been reported. The vulnerability affects a niche web application used primarily in the hospitality industry for hotel management, which may limit the scope but also targets sensitive customer and operational data. The lack of available patches at the time of publication necessitates immediate mitigation efforts by affected organizations.

For European organizations, especially those in the hospitality sector using the Responsive Hotel Site 1.0, this vulnerability poses a risk of unauthorized access to sensitive customer and operational data. Exploitation could lead to data leakage, unauthorized data modification, or deletion, impacting business operations and customer trust. Given the administrative nature of the vulnerable endpoint, attackers with elevated privileges could leverage this flaw to escalate their access or disrupt services. This could result in regulatory non-compliance issues under GDPR due to potential exposure of personal data. The public availability of exploit code increases the likelihood of targeted attacks, particularly against smaller hotels or chains that may lack robust cybersecurity defenses. The medium severity rating suggests a moderate but tangible threat that requires timely attention to prevent exploitation and potential reputational damage.

1. Immediately restrict access to the /admin/usersettingdel.php endpoint to trusted IP addresses or VPN users to reduce exposure. 2. Implement strict input validation and parameterized queries or prepared statements in the application code to prevent SQL injection. 3. Monitor web server and application logs for suspicious activities targeting the 'eid' parameter or admin endpoints. 4. Apply any vendor-provided patches or updates as soon as they become available. 5. Conduct a thorough security review of the entire application to identify and remediate other potential injection points. 6. Employ Web Application Firewalls (WAFs) with custom rules to detect and block SQL injection attempts targeting this vulnerability. 7. Educate administrative users on secure credential management and monitor for unusual login patterns that could indicate compromised accounts. 8. Regularly back up databases and test restoration procedures to minimize impact in case of data tampering or loss.