CVE-2026-25057

Name: CVE-2026-25057
Creator: NVD / NIST
Published: 2026-02-09T20:15:56.55+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

CRITICALCVSS 9.1/10EPSS 0.47%

Last modified Jun 17, 2026

CVE-2026-25057 is a critical-severity vulnerability rated 9.1/10 on the CVSS scale. 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). EPSS estimates a 0.47% chance of exploitation in the next 30 days.

Description

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.

Metrics

CVSS 3.1

9.1/10

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

EPSS Probability

0.47%

37.1th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-23

Affected Software

Vendor	Product	Versions
Markusproject	Markus	< 2.9.1

References

https://github.com/MarkUsProject/Markus/commit/0ca002a1f0071c7a00dbb2ed34fede57323c5dc7Patch
https://github.com/MarkUsProject/Markus/releases/tag/v2.9.1Product, Release Notes
https://github.com/MarkUsProject/Markus/security/advisories/GHSA-mccg-p332-252hVendor Advisory

Timeline

Published: Feb 9, 2026
Last Modified: Jun 17, 2026
Status: Analyzed

Frequently Asked Questions

What is CVE-2026-25057?

How severe is CVE-2026-25057?

CVE-2026-25057 has a CVSS score of 9.1/10 (CRITICAL severity). The EPSS model estimates a 0.47% probability of exploitation in the next 30 days.

How do I fix CVE-2026-25057?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2026-25057?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST