high8.0
CVE-2026-28405
MarkUs is a web application for the submission and grading of student assignments.
Impact
MarkUs is a web application for the submission and grading of student assignments. Prior to version 2.9.1, the courses/<:course_id>/assignments/<:assignment_id>/submissions/html_content route reads the contents of a student-submitted file and renders them without sanitization. This issue has been patched in version 2.9.1.
Affected products
| Vendor | Product | Affected versions |
|---|---|---|
| Markusproject | Markus | before 2.9.1 |