An Insecure Direct Object Reference (IDOR) in classroomio 0.1.13 allows students to access sensitive admin/teacher endpoints by manipulating course IDs in URLs, resulting in unauthorized disclosure of sensitive course, admin, and student data. The leak occurs momentarily before the system reverts to a normal state restricting access.
| Software | From | Fixed in |
|---|---|---|
| classroomio / classroomio | 0.1.13 | 0.1.13.x |