CVE-2026-0733 identifies a SQL Injection vulnerability in the PHPGurukul Online Course Registration System, specifically in versions 3.0 and 3.1. The vulnerability resides in the /onlinecourse/admin/manage-students.php script, where the id or cid parameters are improperly sanitized, allowing an attacker to inject malicious SQL commands. This injection flaw enables remote attackers to manipulate backend database queries without requiring authentication or user interaction, potentially leading to unauthorized data disclosure, data modification, or deletion. The vulnerability has been publicly disclosed, increasing the likelihood of exploitation, although no active exploits have been reported in the wild to date. The CVSS 4.0 vector indicates network attack vector (AV:N), low attack complexity (AC:L), no privileges required (PR:L), no user interaction (UI:N), and partial impacts on confidentiality, integrity, and availability (VC:L, VI:L, VA:L). This suggests that an attacker with limited privileges could exploit the vulnerability remotely to compromise sensitive data or disrupt services. The lack of available patches or vendor advisories necessitates immediate attention from system administrators to implement input validation and parameterized queries to mitigate the risk. The vulnerability is particularly concerning for educational institutions relying on this system for student management and course registration, as it could lead to exposure of personal data or disruption of academic operations.

For European organizations, particularly educational institutions using 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 student records, and potential disruption of course registration services. This could result in regulatory non-compliance under GDPR due to data breaches, reputational damage, and operational downtime. Since the vulnerability can be exploited remotely without authentication, attackers could leverage it to gain footholds within institutional networks or exfiltrate data. The medium severity rating indicates a moderate but tangible threat that should not be underestimated, especially given the public disclosure of exploit details. Organizations with limited security resources or outdated systems are particularly vulnerable. The impact extends beyond data loss to potential financial penalties and erosion of trust among students and staff.

1. Immediate code audit of the /onlinecourse/admin/manage-students.php file to identify and sanitize all inputs, especially the id and cid parameters. 2. Implement parameterized queries or prepared statements to prevent SQL injection attacks. 3. Restrict access to the admin interface through network segmentation and IP whitelisting to reduce exposure. 4. Monitor logs for unusual database query patterns or repeated failed attempts targeting the vulnerable parameters. 5. If vendor patches become available, prioritize their deployment in all affected environments. 6. Conduct security awareness training for administrators managing the system to recognize and respond to suspicious activities. 7. Consider deploying Web Application Firewalls (WAF) with rules to detect and block SQL injection attempts targeting the affected endpoints. 8. Regularly back up databases and verify restoration procedures to minimize impact in case of data compromise. 9. Evaluate the possibility of upgrading to newer, supported versions of the software or alternative platforms with better security postures. 10. Engage in vulnerability scanning and penetration testing focused on injection flaws to proactively identify and remediate similar issues.