Executive brief
Frappe Learning Management System (LMS) is a platform used to organize educational content and quizzes. A flaw in the system allows students to manually change their quiz scores using browser tools before submitting them. While this does not expose private data or allow access to other accounts, it allows students to falsify their grades, undermining the academic integrity of the platform.
Technical details
A client-side enforcement vulnerability (CWE-602) exists in Frappe LMS versions prior to 2.46.0. The application relies on the client-side browser to calculate and transmit quiz scores rather than performing the calculation on the server. An authenticated student can use browser developer tools to intercept and modify the score value in the submission request. This allows for the manipulation of personal grade data, though it does not provide a path for privilege escalation or unauthorized access to other users' data. The issue is resolved in version 2.46.0 by implementing server-side score validation.
Affected products
- Frappe LMS >= 2.0.0, < 2.46.0
Timeline
- 2026-04-07: advisory: GitHub advisory published by vendor
- 2026-04-08: disclosed: CVE published to NVD
- 2026-04-08: patched: Fix released in version 2.46.0