CVE-2026-116010 in RosarioSIS
Summary
by MITRE • 10/24/2026
RosarioSIS before 12.9.1 contains a missing authorization vulnerability that allows authenticated teachers to write records for students outside their course period by supplying arbitrary student IDs. Attackers can modify the st_arr, values, or attendance POST arrays in MakeReferral.php, EnterEligibility.php, InputFinalGrades.php, and TakeAttendance.php to create referrals, eligibility codes, attendance and final grades for any student in the school.
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Analysis
by VulDB Data Team • 10/24/2026
The vulnerability identified in RosarioSIS prior to version 12.9.1 represents a critical failure in server-side access control mechanisms, specifically classified under CWE-862 as Missing Authorization. This flaw allows authenticated users with teacher privileges to bypass intended restrictions and perform actions on resources they are not authorized to manage. The core technical issue lies in the application's reliance solely on user session authentication without implementing robust object-level or data-level authorization checks when processing specific POST requests. By supplying arbitrary student identifiers within HTTP request parameters, an attacker can manipulate records belonging to students who are not enrolled in their assigned course periods. This lack of validation extends across multiple critical modules including MakeReferral.php, EnterEligibility.php, InputFinalGrades.php, and TakeAttendance.php, indicating a systemic architectural weakness rather than an isolated coding error.
From an operational perspective, this vulnerability enables significant data integrity violations within the educational institution's information system. An attacker can forge attendance records for any student in the school database, potentially falsifying presence logs to cover up truancy or create fraudulent academic histories. Furthermore, the ability to input final grades allows for the manipulation of academic performance metrics, which could be exploited for malicious purposes such as grade inflation or sabotage against specific students. The capability to generate referrals and eligibility codes further expands the impact by allowing unauthorized administrative actions that affect student status and resource allocation. These modifications occur without triggering any alerts or requiring additional verification steps from system administrators, making the exploitation straightforward and difficult to detect through standard audit logs unless deep forensic analysis is performed on database changes.
In terms of threat modeling, this vulnerability aligns with MITRE ATT&CK technique T1078 Valid Accounts, as it requires initial authentication but leverages those credentials for unauthorized actions. It also reflects aspects of privilege escalation where a lower-privileged user achieves effects typically reserved for higher-level administrators or course-specific instructors. The exploitation vector is remote if the web interface is accessible over the network and local if an attacker gains physical access to a terminal within the school's intranet. Given that student information systems often contain sensitive personally identifiable information, this vulnerability also poses risks related to data privacy regulations such as FERPA in the United States or GDPR in Europe, depending on the jurisdiction of the institution using RosarioSIS.
Mitigation strategies must focus on implementing strict server-side validation for all user inputs and enforcing role-based access control at the database interaction layer. Developers should ensure that every request involving student records verifies not only that the requester is authenticated but also that they have explicit permission to modify data associated with the specific student ID provided in the POST arrays such as st_arr, values, or attendance. This can be achieved by cross-referencing the teacher's assigned course roster against the target student ID before processing any write operations. Additionally, implementing comprehensive audit logging for all grade and attendance modifications would aid in detecting unauthorized changes post-exploitation. Institutions running versions of RosarioSIS prior to 12.9.1 should immediately upgrade to the patched version where these authorization checks have been reinforced to prevent arbitrary data manipulation by authenticated teachers.