CVE-2026-25057

critical · 9.1

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.

9.1

CVSS

0.5%

EPSS (exploit prob.)

40th

EPSS percentile

2026-02-09

Published

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

Weaknesses

CWE-23

Affected products

Vendor	Product	Affected versions
markusproject	markus	< 2.9.1

Check a specific version with /api/v1/cve/match.

References

https://github.com/MarkUsProject/Markus/commit/0ca002a1f0071c7a00dbb2ed34fede57323c5dc7
https://github.com/MarkUsProject/Markus/releases/tag/v2.9.1
https://github.com/MarkUsProject/Markus/security/advisories/GHSA-mccg-p332-252h

Query this programmatically:

curl https://evil-db.io/api/v1/cve/CVE-2026-25057