CVE-2026-28405

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CVSS 3.1

5.4 medium

EPSS

<1%p13

Published

Mar 5, 2026 (Mar 5, 2026)

Modified

Jun 17, 2026

Description

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.

Vendors: markusproject
Products: markus
Weakness: CWE-79
Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N

NVD CVE.org GitHub PoCs EPSS (0.2%)

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