CVE-2026-0733 identifies a SQL Injection vulnerability in the PHPGurukul Online Course Registration System, affecting versions 3.0 and 3.1. The vulnerability resides in the /onlinecourse/admin/manage-students.php script, where the 'cid' parameter is improperly sanitized, allowing an attacker to inject malicious SQL code. This injection flaw can be exploited remotely without requiring authentication or user interaction, making it accessible to a wide range of attackers. The vulnerability could allow attackers to execute arbitrary SQL commands, potentially leading to unauthorized disclosure, modification, or deletion of sensitive student and course registration data. The CVSS 4.0 vector indicates low complexity (AC:L), no privileges required (PR:L), no user interaction (UI:N), and partial impact on confidentiality, integrity, and availability (VC:L, VI:L, VA:L). Although no public exploits are currently known in the wild, the public disclosure increases the risk of exploitation. The lack of available patches or updates in the provided data suggests that organizations must implement manual mitigations or seek vendor support. The vulnerability is particularly concerning for educational institutions relying on this system for managing student registrations and course data, as exploitation could disrupt operations and compromise personal information.

For European organizations, especially educational institutions using the PHPGurukul Online Course Registration System, this vulnerability poses a significant risk to the confidentiality, integrity, and availability of student and administrative data. Exploitation could lead to unauthorized access to sensitive personal information, manipulation or deletion of course registration records, and potential disruption of academic operations. This could result in regulatory non-compliance, particularly under GDPR, leading to legal and financial repercussions. The remote and unauthenticated nature of the exploit increases the attack surface, making it easier for threat actors to target vulnerable systems. Additionally, the public disclosure of the vulnerability may attract opportunistic attackers. The impact extends beyond data loss to reputational damage for affected institutions and potential operational downtime during incident response and remediation.

Organizations should immediately audit their PHPGurukul Online Course Registration System installations to identify affected versions (3.0 and 3.1). In the absence of official patches, developers must implement strict input validation and parameterized queries or prepared statements for the 'cid' parameter in /onlinecourse/admin/manage-students.php to prevent SQL injection. Employing Web Application Firewalls (WAFs) with SQL injection detection rules can provide an additional layer of defense. Regularly monitor logs for suspicious database query patterns or unauthorized access attempts. Restrict access to the admin interface by IP whitelisting or VPN to reduce exposure. Conduct security awareness training for administrators to recognize and respond to potential exploitation attempts. Finally, maintain up-to-date backups of critical data to enable recovery in case of data compromise.