CVE-2026-27807: MarkUs is a web application for the submission and grading of student assignments. Prior to version 2.9.4, MarkUs allows course instructors to upload YAML…

PriorityP426medium4.9CVSS 3.1

AVNACLPRHUINSUCNINAH

EPSS

0.28%

20.1th percentile

MarkUs is a web application for the submission and grading of student assignments. Prior to version 2.9.4, MarkUs allows course instructors to upload YAML files to create/update various entities (e.g., assignment settings). These YAML files are parsed with aliases enabled. This issue has been patched in version 2.9.4.

Affected

1 ranges

Vendor	Product	Version range	Fixed in
markusproject	markus	< 2.9.4	2.9.4

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