Description
RosarioSIS before 12.9 contains an improper authorization vulnerability that allows school-scoped administrators to assign fees and payments to students of other schools via MassAssignFees.php and MassAssignPayments.php. Attackers can substitute foreign student IDs in the student[] POST array of a modfunc=save request to alter other schools' student billing balances, breaking school isolation.
Metrics
CVSS 3.1 2.7/10
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:L/A:NWeakness enumeration
Affected software
| Vendor | Product | Versions |
|---|---|---|
| francoisjacquet | RosarioSIS | < 12.9 |
References
- https://github.com/francoisjacquet/rosariosis
- https://github.com/francoisjacquet/rosariosis/blob/v12.8.1/modules/Student_Billing/MassAssignFees.php#L15
- https://github.com/francoisjacquet/rosariosis/blob/v12.8.1/modules/Student_Billing/MassAssignPayments.php#L16
- https://github.com/francoisjacquet/rosariosis/commit/a8bb460aacb11661934e6e91fbe0d8158fbc0c4f
- https://github.com/francoisjacquet/rosariosis/releases/tag/v12.9
- https://gitlab.com/francoisjacquet/rosariosis/-/issues/376
- https://www.vulncheck.com/advisories/rosariosis-before-12.9-improper-authorization-via-student-billing-mass-assignment
Timeline
- Published
- Nov 3, 2026
- Last modified
- Nov 9, 2026
- NVD status
- Deferred