CVE-2026-24900

MEDIUM EPSS 16.3%
Published Feb 9, 20264mo ago · Modified Feb 19, 20264mo ago
6.5 CVSS 3.1
Medium
Find Similar
Published Feb 9, 2026 4mo ago
Last Modified Feb 19, 2026 4mo ago

Description

MarkUs is a web application for the submission and grading of student assignments. Prior to 2.9.1, the courses/<:course_id>/assignments/<:assignment_id>/submissions/html_content accepted a select_file_id parameter to serve SubmissionFile objects containing a record of files submitted by students. This parameter was not correctly scoped to the requesting user, allowing users access arbitrary submission file contents by id. This vulnerability is fixed in 2.9.1.

CVSS Details

Base Score
6.5
Exploitability
2.8
Impact
3.6
Vector string
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
Attack Vector Network
Attack Complexity Low
Privileges Required Low
User Interaction None
Scope Unchanged
Confidentiality High
Integrity None
Availability None

Threat Intelligence

EPSS Exploit Probability
16.3% percentile
Exploit & Patch Status
No Known Exploit
Patch Available

Weaknesses 1

CWE-639

Affected Products 1

VendorProductVersionRange
markusprojectmarkus* <2.9.1

References 3

  • github.com https://github.com/MarkUsProject/Markus/commit/7daed9fd2d44932223798d997b55094a3bff104b
    Patch
  • github.com https://github.com/MarkUsProject/Markus/releases/tag/v2.9.1
    ProductRelease Notes
  • github.com https://github.com/MarkUsProject/Markus/security/advisories/GHSA-56gh-8hmq-7q88
    Vendor Advisory

Remediation

  • github.com https://github.com/MarkUsProject/Markus/commit/7daed9fd2d44932223798d997b55094a3bff104b
    Patch