CVE-2025-6318 is a critical SQL Injection vulnerability identified in version 1.0 of the PHPGurukul Pre-School Enrollment System, specifically within the /admin/check_availability.php file. The vulnerability arises from improper sanitization and validation of the 'Username' parameter, which is directly used in SQL queries without adequate escaping or parameterization. This flaw allows an unauthenticated remote attacker to inject malicious SQL code, potentially manipulating the backend database. Exploitation can lead to unauthorized data access, modification, or deletion, compromising the confidentiality, integrity, and availability of the enrollment system's data. The vulnerability does not require any authentication or user interaction, making it straightforward to exploit remotely. Although the CVSS 4.0 score is 6.9 (medium severity), the potential impact is significant given the nature of SQL Injection attacks. No official patches or fixes have been published yet, and while no exploits are currently known to be active in the wild, the public disclosure of the vulnerability increases the risk of exploitation. The affected product is a niche enrollment management system used primarily by educational institutions for managing pre-school admissions, which may contain sensitive personal data of children and their families.

For European organizations, particularly educational institutions using the PHPGurukul Pre-School Enrollment System, this vulnerability poses a substantial risk. Exploitation could lead to unauthorized access to sensitive personal data, including children's identities, contact information, and enrollment details, potentially violating GDPR and other data protection regulations. Data integrity could be compromised, leading to fraudulent enrollment records or denial of service through database manipulation. The availability of the enrollment system could be disrupted, impacting administrative operations and causing delays in admissions processes. Given the sensitive nature of the data and the critical role of enrollment systems, a successful attack could damage institutional reputation and result in regulatory penalties. Furthermore, since the vulnerability requires no authentication and can be exploited remotely, attackers from anywhere could target European institutions, increasing the threat landscape.

1. Immediate code review and remediation: Developers should implement parameterized queries or prepared statements in the /admin/check_availability.php script to eliminate SQL Injection vectors. 2. Input validation and sanitization: Enforce strict validation rules on the 'Username' parameter, allowing only expected characters and lengths. 3. Web Application Firewall (WAF): Deploy a WAF with rules specifically designed to detect and block SQL Injection attempts targeting the vulnerable endpoint. 4. Network segmentation: Restrict access to the administrative interface to trusted IP addresses or VPN connections to reduce exposure. 5. Monitoring and logging: Enable detailed logging of database queries and web requests to detect suspicious activities early. 6. Incident response readiness: Prepare for potential exploitation by having backup and recovery procedures in place to restore data integrity and availability. 7. Vendor engagement: Contact PHPGurukul for official patches or updates and apply them promptly once available. 8. Alternative solutions: Consider migrating to more secure and actively maintained enrollment systems if remediation is not feasible in the short term.