Home/CVE/MarkUs is a web application for the submission and grading of student assignments. Prior to 2.9.1, instructors are able
CVE

CVE-2026-25057

MarkUs is a web application for the submission and grading of student assignments. Prior to 2.9.1, instructors are able

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.

CRITICAL · CVSS 9.1 EPSS 0.00111
Schedule remediation
  • CVSS base score ≥ 7.0
Sigma rules0 YARA rules0
⬡

Weakness Classification

CWE-23Relative Path Traversal
▤

Affected Products & Versions

1
markusproject markus< 2.9.1
▣

Scoring & Timeline

9.1
CRITICAL · CVSS v3.1 · security-advisories@github.com
View on NVD
Attack Vector
Network Adjacent Local Physical
Attack Complexity
Low High
Privileges Required
None Low High
User Interaction
None Required
Scope
Unchanged Changed
Confidentiality
None Low High
Integrity
None Low High
Availability
None Low High
Published to NVD09 Feb 2026 · 08:15 PM
CVSS VectorCVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H
SSVC triage · cisa-vulnrichment
Exploitation
none
Automatable
no
Technical impact
total
SSVC asks the questions that actually drive patch urgency: is it being exploited, can attacks be automated, and how total is the impact.
🔗

References & Sources

3
Source URLs (vendor pages, mailing lists, write-ups). Exploit/PoC links are in their own section above to avoid duplication.
https://github.com/MarkUsProject/Markus/commit/0ca002a1f0071c7a00dbb2ed34fede57323c5dc7Patch
https://github.com/MarkUsProject/Markus/releases/tag/v2.9.1ProductRelease Notes
https://github.com/MarkUsProject/Markus/security/advisories/GHSA-mccg-p332-252hVendor Advisory
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