Vulnerability in Markusproject Markus
CVE-2026-25962
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.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H.
EPSS exploit prediction
EPSS: 0.004 (36.2th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 36th percentile — 36.2% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.003 · newest: 0.004 · change: +0.002
Affected products
- Markusproject Markus — versions < 2.9.4
Weakness classification (CWE)
References
- github.com/MarkUsProject/Markus/security/advisories/GHSA-x8xv-j7fc-65x5 (Vendor Advisory)
- github.com/MarkUsProject/Markus/releases/tag/v2.9.4 (Product, Release Notes)
Frequently asked questions
- What is CVE-2026-25962?
- CVE-2026-25962 is a medium-severity vulnerability in Markusproject Markus, classified under Improper Handling of Highly Compressed Data (Data Amplification). CVSS score: 6.5/10. Published 2026-03-06.
- How severe is CVE-2026-25962?
- Medium severity. CVSS v3 base score is 6.5 out of 10.