CVE-2026-28405: MarkUs is a web application for the submission and grading of student assignments. Prior to version 2.9.1, the courses//assignments//submissions/html_content…

PriorityP427medium5.4CVSS 3.1

AVNACLPRLUIRSCCLILAN

EPSS

0.22%

12.8th percentile

MarkUs is a web application for the submission and grading of student assignments. Prior to version 2.9.1, the courses//assignments//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

1 ranges

Vendor	Product	Version range	Fixed in
markusproject	markus	< 2.9.1	2.9.1

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