Tutor LMS <= 4.0.9 - Unauthenticated Insecure Direct Object Reference to Quiz Attempt Disclosure via 'attempt_id' Parameter

ID

WPSEC-2026-0263

Plugin

Tutor LMS – eLearning and online course solution (tutor)

Affected

from 4.0.0 before 4.1.0

Remediation

Update to 4.1.0 or later.

CVSS 3.1

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

Weakness

CWE-639

Usage

Plugin Medium · Affected versions Low among sites WPSec scans, 2026-10-22

Attack surface

Tutor LMS on WPSec AttackSurface

Fix released

2026-09-29

Published

2026-10-02

Description

The Tutor LMS plugin for WordPress is vulnerable to Insecure Direct Object Reference in versions 4.0.0 up to, and including, 4.0.9 via the 'attempt_id' parameter of the learning area's quiz attempt details view. This is due to the attempt ownership check being skipped entirely when the visitor is not logged in. This makes it possible for unauthenticated attackers to view any learner's quiz attempt, including the learner's name, the questions, the submitted answers and the marks, on sites that offer at least one public course or free-preview lesson.

References

• https://wpsec.com/vuln/WPSEC-2026-0263/
• https://plugins.svn.wordpress.org/tutor/tags/4.1.0/
• https://wordpress.org/plugins/tutor/

Published by WPSec. Provided as is, without warranty. Corrections: contact us.

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