CVE-2026-24900

MEDIUM

6.5

Description

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

CVE Details

CVSS v3.1 Score6.5

SeverityMEDIUM

CVSS VectorCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N

Attack VectorNETWORK

ComplexityLOW

Privileges RequiredLOW

User InteractionNONE

Published2/9/2026

Last Modified2/19/2026

Sourcenvd

Honeypot Sightings0

Affected Products

markusproject:markus

Weaknesses (CWE)

CWE-639

References

https://github.com/MarkUsProject/Markus/commit/7daed9fd2d44932223798d997b55094a3bff104b(security-advisories@github.com)

https://github.com/MarkUsProject/Markus/releases/tag/v2.9.1(security-advisories@github.com)

https://github.com/MarkUsProject/Markus/security/advisories/GHSA-56gh-8hmq-7q88(security-advisories@github.com)

IOC Correlations

No correlations recorded

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