CVE-2026-0803 identifies a SQL injection vulnerability in the PHPGurukul Online Course Registration System, specifically affecting versions 3.0 and 3.1. The vulnerability resides in the /enroll.php script, where multiple parameters (studentregno, Pincode, session, department, level, course, sem) are insufficiently sanitized, allowing attackers to inject arbitrary SQL commands. This injection flaw can be exploited remotely without requiring authentication or user interaction, making it a significant risk for systems exposed to the internet. The attack vector involves manipulating HTTP request parameters to alter SQL queries executed by the backend database, potentially leading to unauthorized data disclosure, data modification, or denial of service. The CVSS 4.0 score of 5.3 reflects a medium severity, considering the lack of authentication but the limited scope of impact (low to limited confidentiality, integrity, and availability impact). No patches have been officially released yet, and no known exploits are reported in the wild, but public disclosure increases the risk of exploitation. The vulnerability affects educational institutions and organizations using PHPGurukul’s system for course registration, which may contain sensitive student and academic data. The absence of secure coding practices such as prepared statements or input validation is the root cause. Remediation involves applying patches when available or implementing immediate mitigations such as input sanitization and query parameterization.

For European organizations, particularly educational institutions using the PHPGurukul Online Course Registration System, this vulnerability poses a risk of unauthorized access to student records and academic data. Exploitation could lead to data breaches involving personally identifiable information (PII), academic records, and potentially financial information if linked. Integrity of course registration data could be compromised, affecting enrollment accuracy and institutional operations. Availability may be impacted if attackers execute denial-of-service attacks via crafted SQL payloads. The medium severity rating suggests moderate impact, but the ease of remote exploitation without authentication increases risk. Institutions in Europe with limited cybersecurity resources may face challenges in timely detection and mitigation. Additionally, regulatory frameworks such as GDPR impose strict requirements on protecting personal data, so exploitation could result in legal and reputational consequences. The threat is particularly relevant for universities and colleges with internet-facing registration portals running vulnerable PHPGurukul versions.

1. Immediately audit all PHPGurukul Online Course Registration System deployments to identify affected versions (3.0 and 3.1). 2. Apply vendor patches as soon as they become available; if no official patch exists, implement temporary mitigations. 3. Implement strong input validation on all parameters in /enroll.php, ensuring only expected data types and formats are accepted. 4. Refactor the application code to use parameterized queries or prepared statements to prevent SQL injection. 5. Employ web application firewalls (WAFs) with rules to detect and block SQL injection attempts targeting the vulnerable parameters. 6. Monitor logs for suspicious activity related to the vulnerable endpoints and parameters. 7. Conduct security awareness training for developers and administrators on secure coding practices. 8. Restrict access to the registration system to trusted networks or require authentication where feasible to reduce exposure. 9. Regularly backup databases to enable recovery in case of data tampering or loss. 10. Coordinate with incident response teams to prepare for potential exploitation scenarios.