OpenSIS 9.2 and below is vulnerable to Incorrect Access Control in Student.php, which allows an authenticated low-privilege user to perform unauthorized database write operations relating to the data of other users.
An insecure direct object reference (IDOR) in the component /assets/stafffiles of OS4ED openSIS v7.0 to v9.1 allows unauthenticated attackers to access files uploaded by staff members.