CVE-2025-6418 is a critical SQL Injection vulnerability identified in version 1.0 of the Simple Online Hotel Reservation System developed by code-projects. The vulnerability resides in the /admin/edit_query_account.php file, specifically involving the manipulation of the 'Name' parameter. An attacker can exploit this flaw by injecting malicious SQL code through the 'Name' argument, which is not properly sanitized or parameterized before being used in database queries. This leads to unauthorized access or modification of the backend database. The attack vector is remote and does not require any authentication or user interaction, making it highly accessible to attackers. The vulnerability affects the confidentiality, integrity, and availability of the system's data, as attackers could extract sensitive customer information, alter booking records, or disrupt service operations. The CVSS 4.0 base score is 6.9 (medium severity), reflecting the ease of exploitation (network accessible, no privileges or user interaction needed) but limited scope and impact compared to more severe SQL injection flaws. No known exploits are currently reported in the wild, but the exploit details have been publicly disclosed, increasing the risk of exploitation. The absence of available patches or mitigation links suggests that affected organizations must implement their own protective measures promptly. Given the nature of the system—a hotel reservation platform—this vulnerability could expose personal identifiable information (PII) of customers and operational data critical to hospitality businesses.

For European organizations, particularly those in the hospitality sector using the Simple Online Hotel Reservation System version 1.0, this vulnerability poses a significant risk. Exploitation could lead to unauthorized disclosure of customer data, including names, contact details, and booking histories, violating GDPR regulations and resulting in substantial legal and financial penalties. Integrity breaches could allow attackers to alter reservation data, causing operational disruptions, financial losses, and reputational damage. Availability impacts could manifest as denial of service or database corruption, affecting customer trust and business continuity. Since the vulnerability requires no authentication and can be exploited remotely, attackers can launch automated attacks at scale, increasing the threat level. European hotels, travel agencies, and booking platforms using this software are at risk of targeted attacks, especially as the hospitality industry is a frequent target for cybercriminals seeking financial gain or data theft. The public disclosure of the exploit details further elevates the urgency for mitigation to prevent widespread exploitation.

1. Immediate code review and remediation: Implement parameterized queries or prepared statements in /admin/edit_query_account.php to sanitize the 'Name' parameter and prevent SQL injection. 2. Input validation: Enforce strict server-side validation on all inputs, especially those interacting with the database. 3. Web Application Firewall (WAF): Deploy or update WAF rules to detect and block SQL injection attempts targeting the vulnerable parameter. 4. Access controls: Restrict access to the /admin directory by IP whitelisting or VPN to limit exposure. 5. Monitoring and logging: Enable detailed logging of database queries and web requests to detect suspicious activity early. 6. Incident response readiness: Prepare to respond to potential breaches by having data backup and recovery plans in place. 7. Vendor engagement: Contact the software vendor or community to seek official patches or updates and apply them promptly once available. 8. Alternative solutions: Consider migrating to more secure, actively maintained hotel reservation systems if remediation is not feasible. These steps go beyond generic advice by focusing on immediate code-level fixes, network-level protections, and operational readiness tailored to this specific vulnerability and product.