Insecure Direct Object Reference Vulnerability in Tutor LMS Plugin by WordPress
CVE-2026-89333

6.5MEDIUM

Key Information:

Vendor

WordPress
Status
Tutor Lms – Elearning And Online Course Solution
Vendor
CVE Published:
19 September 2026

What is CVE-2026-89333?

The Tutor LMS plugin, utilized for eLearning and online course solutions on WordPress, is susceptible to an Insecure Direct Object Reference. This vulnerability arises from inadequate validation of the 'student_id' parameter, enabling authenticated users with subscriber-level access and higher to discover personal data of WordPress users—including email addresses and phone numbers—by exploiting user IDs. This poses significant privacy concerns within WordPress environments and necessitates immediate attention for affected versions.

Affected Version(s)

Tutor LMS – eLearning and online course solution 0 <= 4.0.8

References

https://www.wordfence.com/threat-intel/vulnerabilities/id...
https://plugins.trac.wordpress.org/browser/tutor/tags/4.0...
https://plugins.trac.wordpress.org/browser/tutor/tags/4.0...

CVSS V3.1

Score:
6.5
Severity:
MEDIUM
Confidentiality:
High
Integrity:
None
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
Low
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

Credit

Dthangws
.