Description
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.
References (3)
Core 3
Core References
Vendor Advisory x_refsource_confirm
https://github.com/MarkUsProject/Markus/security/advisories/GHSA-p5pc-pxrj-3893
Patch x_refsource_misc
https://github.com/MarkUsProject/Markus/commit/55d74f2ddb72d2ec2f29aa2b4cb6b2da10755036
Release Notes x_refsource_misc
https://github.com/MarkUsProject/Markus/releases/tag/v2.9.1
Scores
CVSS v3
8.0
EPSS
0.0004
EPSS Percentile
11.3%
Attack Vector
NETWORK
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H
CISA SSVC
Vulnrichment
Exploitation
none
Automatable
no
Technical Impact
total
Details
CWE
CWE-79
Status
published
Products (1)
markusproject/markus
< 2.9.1
Published
Mar 05, 2026
Tracked Since
Mar 06, 2026