CVE-2026-9483: SourceCodester Student Grades Management System grades.php improper authorization
A vulnerability was found in SourceCodester Student Grades Management System 1.0. Affected is an unknown function of the file grades.php. Performing a manipulation of the argument studentid results in improper authorization. The attack may be initiated remotely. The exploit has been made public and could be used.
Affected Software
Remediation
Recommended actions to resolve this vulnerability, in priority order.
- Configuration
Modify grades.php to perform server-side checks on the student_id parameter on every request: (1) validate and sanitize the student_id (type, range, existence), (2) enforce authorization (verify that the session user is permitted to view/modify that student_id using role-based access checks), and (3) return 401/403 on unauthorized access. Do not rely on client-side controls.
SourceCodester Student Grades Management System - grades.php student_id handling = Enforce server-side authorization and strict validation for the student_id parameter; ensure the authenticated user has permission to access the requested student record and reject unauthorized requests - Compensating control
Restrict access to the grades management interface to trusted networks/IP ranges or require access via a VPN until the application is fixed.
- Compensating control
Deploy WAF/IPS rules to detect and block requests that tamper with the student_id parameter or match known exploit payloads against grades.php; log and alert on blocked attempts.
- Operational
Perform a code audit of grades.php and related endpoints to identify and fix improper authorization issues, test the fixes in a staging environment, deploy the corrected code to production, and monitor logs for exploitation attempts. If feasible, disable public access to the affected functionality until a tested fix is deployed.
Event History
Frequently Asked Questions
What is the severity of CVE-2026-9483?
CVE-2026-9483 has a medium severity score of 6.3.
How do I fix CVE-2026-9483?
To address CVE-2026-9483, update to the latest version of SourceCodester Student Grades Management System that remedies the improper authorization issue.
What is the impact of CVE-2026-9483?
CVE-2026-9483 allows remote attackers to perform unauthorized actions by manipulating the student_id parameter.
Can CVE-2026-9483 be exploited remotely?
Yes, CVE-2026-9483 can be exploited remotely due to the improper authorization in grades.php.
What software is affected by CVE-2026-9483?
CVE-2026-9483 affects SourceCodester Student Grades Management System version 1.0.