CVE-2026-25962 MEDIUM

CVE-2026-25962: MarkUs: Zip bomb in config upload enables DoS

Vendor Markusproject
Product Markus
Weakness CWE-409
Published March 6, 2026
Last update March 6, 2026
View on NVD All CVEs

CVSS base score

6.5/10
Attack vector Network
Attack complexity Low
Privileges required Low
User interaction None
Confidentiality None
Integrity None

CVSS vector

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

What the vulnerability does

01Description

MarkUs is a web application for the submission and grading of student assignments. Prior to version 2.9.4, MarkUs currently extracts zip files without any size or entry-count limits. For example, instructors can upload a zip file to provide an assignment configuration; students can upload a zip file for an assignment submission and indicate its contents should be extracted. This issue has been patched in version 2.9.4.

Key dates

02Disclosure timeline

March 6, 2026 CVE published
March 6, 2026 Record updated