CVE-2025-63453 identifies a critical SQL Injection vulnerability in the Car-Booking-System-PHP version 1.0, located in the /carlux/contact.php script. SQL Injection occurs when untrusted input is improperly sanitized and directly concatenated into SQL queries, allowing attackers to alter the intended query logic. This can lead to unauthorized data retrieval, modification, or deletion within the backend database. The vulnerability is particularly dangerous because it can be exploited remotely without authentication or user interaction, making it accessible to a wide range of attackers. Although the affected version is specified as 1.0 without further detail, the presence of this flaw in a booking system suggests that sensitive customer data, booking details, and possibly payment information could be exposed. No official patches or mitigations are currently linked, indicating that organizations must proactively address the issue. The lack of a CVSS score means severity must be inferred from the nature of SQL Injection vulnerabilities, which are typically high risk due to their potential impact on confidentiality, integrity, and availability. The vulnerability was reserved and published in late 2025, suggesting it is a recent discovery. No known exploits have been reported yet, but the simplicity of SQL Injection attacks means exploitation could be straightforward once details become public.

For European organizations, the impact of this SQL Injection vulnerability can be severe. Compromise of customer data, including personal and financial information, could lead to regulatory penalties under GDPR, reputational damage, and loss of customer trust. Operational disruption could occur if attackers modify or delete booking records, affecting business continuity. The automotive and tourism sectors, which heavily rely on booking systems, are particularly at risk. Additionally, attackers could leverage this vulnerability to escalate privileges within the backend system or pivot to other internal resources. The absence of authentication requirements and user interaction lowers the barrier for exploitation, increasing the threat landscape. Organizations may also face legal consequences if data breaches occur due to negligence in patching or securing vulnerable systems.

To mitigate this vulnerability, organizations should immediately audit the /carlux/contact.php code for unsafe SQL query constructions. Implementing parameterized queries or prepared statements is essential to prevent injection attacks. Input validation and sanitization should be enforced rigorously on all user-supplied data. Web application firewalls (WAFs) can provide an additional layer of defense by detecting and blocking SQL Injection attempts. Regular security testing, including automated scanning and manual code reviews, should be conducted to identify similar vulnerabilities. Organizations should monitor database logs for unusual query patterns indicative of exploitation attempts. If possible, isolate the affected system and apply patches or updates once available from the vendor. Finally, educating developers on secure coding practices and maintaining an incident response plan will improve resilience against such threats.