---
id: CVE-2025-6639
title: >-
  The Tutor LMS Pro – eLearning and online course solution plugin for WordPress
  is vulnerable to Insecure Direct Object Reference in all versions up to, and
  including, 3.8.3 due to missing validation on a user controlled key when
  viewing a…
summary: >-
  The Tutor LMS Pro – eLearning and online course solution plugin for WordPress
  is vulnerable to Insecure Direct Object Reference in all versions up to, and
  including, 3.8.3 due to missing validation on a user controlled key when
  viewing a…
severity: medium
cvss: 5.4
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N'
cwe:
  - CWE-285
published: '2025-10-25'
updated: '2026-10-08'
sourceUpdated: '2026-10-08T11:10:00.250'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2025-6639'
references:
  - url: 'https://wordpress.org/plugins/tutor/#developers'
    label: security@wordfence.com
  - url: >-
      https://www.wordfence.com/threat-intel/vulnerabilities/id/8dc16ba4-3c2e-43e2-82a0-b742276b9640?source=cve
    label: security@wordfence.com
tags:
  - nvd
epss: 0.00178
epssPercentile: 0.06785
ingestedAt: '2026-10-08T11:31:27.581Z'
---

## Overview

The Tutor LMS Pro – eLearning and online course solution plugin for WordPress is vulnerable to Insecure Direct Object Reference in all versions up to, and including, 3.8.3 due to missing validation on a user controlled key when viewing and editing assignments through the tutor_assignment_submit() function. This makes it possible for authenticated attackers, with Subscriber-level access and above, to view and edit assignment submissions of other students.

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.