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CRITICALCVE-2026-25057Published Modified CNA GitHub_M

CVE-2026-25057: Zip Slip in MarkUs config upload allowing RCE

MarkUs is a web application for the submission and grading of student assignments. Prior to 2.9.1, instructors are able to upload a zip file to create an assignment from an exported configuration (courses/<:course_id>/assignments/upload_config_files). The uploaded zip file entry names are used to create paths to write files to disk without checking these paths. This vulnerability is fixed in 2.9.1.

Metrics

CVSS v3.1
9.1
Severity
CRITICAL
Fixed in
—
Affected Products
1
Affected packages
  • MarkUsProject / Markus
    < 2.9.1
CVSS Vector
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H
References