CVE-2025-6639

Tutor LMS Pro – eLearning and online course solution <= 3.8.3 - Authenticated (Subscriber+) Insecure Direct Object Reference to View/Edit Other Assignments

2025-10-24 17:30
sergioframi

Strategic Overview

Status
Patched in 3.9.0
Affected Plugin
Tutor LMS Pro
Affected Version
<= 3.8.3
CVSS
5.4Medium
Weakness type
CWE-285 · Improper Authorization
CVE
CVE-2025-6639
View all Tutor LMS Pro vulnerabilities

At a glance

CVE-2025-6639 is a medium-severity Improper Authorization vulnerability in the Tutor LMS Pro WordPress plugin, affecting versions <= 3.8.3. It carries a CVSS score of 5.4 (reachable over the network; low attack complexity). Exploitation requires an authenticated account at Subscriber level or above. The issue is fixed in version 3.9.0; sites on affected versions should update now. Disclosed October 2025, reported by sergioframi.

Vulnerability 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.

Technical Analysis

The vector marks this flaw as remotely reachable over the network, with low attack complexity — no special timing or configuration is needed, and no interaction from a victim user.

CWE-285: Improper Authorization

Tutor LMS Pro <= 3.8.3 carries this weakness at tutor_assignment_submit(), and reaching it takes an account at Subscriber level or above. Improper authorization means a permission check exists but does not cover the case being exercised, so a caller who is allowed to do one thing is allowed to do a neighbouring thing as well.

A lower-privileged account performs an action reserved for a higher one, which on a multi-author or membership site means an ordinary user reaching administrative behaviour. For Tutor LMS Pro the fix is 3.9.0: builds <= 3.8.3 are affected, anything from 3.9.0 onward is not.

Remediation

Update to version 3.9.0, or a newer patched version

How does WordSec protect against this?

Because it turns on account access, WordSec's login security is the relevant layer: role-based two-factor, captcha and brute-force limits raise the cost of getting the account this needs. None of that substitutes for the fix: Tutor LMS Pro 3.9.0 closes this, and updating the plugin is the step that ends it.

  • Login Security
  • Alerts

External References

https://www.cve.org/CVERecord?id=CVE-2025-6639https://www.wordfence.com/threat-intel/vulnerabilities/id/8dc16ba4-3c2e-43e2-82a0-b742276b9640https://nvd.nist.gov/vuln/detail/CVE-2025-6639

Related records

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