CVE-2026-24900: MarkUs is a web application for the submission and grading of student assignments. Prior to 2.9.1, the courses//assignments//submissions/html_content accepted…

PriorityP339medium6.5CVSS 3.1

AVNACLPRLUINSUCHINAN

EPSS

0.25%

16.3th percentile

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

Affected

1 ranges

Vendor	Product	Version range	Fixed in
markusproject	markus	< 2.9.1	2.9.1

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