CVE-2026-25057
Critical · 9.1CVSS
9.1
EPSS
0.5%
Published
Feb 9, 2026
CISA due date
—
The record
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.
Affected packages
| Ecosystem | Package | Introduced | Fixed |
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