CVE-2026-24900 — MarkUs has a submission-view IDOR exposes all student submissions
MarkUs is a web application for the submission and grading of student assignments. Prior to 2.9.1, the courses/<:course_id>/assignments/<:assignment_id>/submissions/html_content…
Published: 2026-02-09 · CVSS: 6.5 · CVSS 3.1
MarkUs is a web application for the submission and grading of student assignments. Prior to 2.9.1, the courses/<:course_id>/assignments/<:assignment_id>/submissions/html_content accepted a select_file_id parameter to serve SubmissionFile objects containing a record of files submitted by students. This parameter was not correctly scoped to the requesting user, allowing users access arbitrary submission file contents by id. This vulnerability is fixed in 2.9.1.
Source: CVE Program · Revision 8b16575c39f1e1810c5e863010da073d2d3285e7