Tutor LMS <= 3.9.7 - Missing Authorization to Unauthenticated Arbitrary Billing Profile Overwrite via 'order_id' Parameter

7.5
Missing Authorization
CVE CVE-2026-3360
CVSS 7.5 (High)
Publicly Published April 9, 2026
Last Updated April 10, 2026
Researcher Supakiad S. (m3ez) - E-CQURITY (Thailand)

Description

The Tutor LMS – eLearning and online course solution plugin for WordPress is vulnerable to an Insecure Direct Object Reference in all versions up to, and including, 3.9.7. This is due to missing authentication and authorization checks in the `pay_incomplete_order()` function. The function accepts an attacker-controlled `order_id` parameter and uses it to look up order data, then writes billing fields to the order owner's profile (`$order_data->user_id`) without verifying the requester's identity or ownership. Because the Tutor nonce (`_tutor_nonce`) is exposed on public frontend pages, this makes it possible for unauthenticated attackers to overwrite the billing profile (name, email, phone, address) of any user who has an incomplete manual order, by sending a crafted POST request with a guessed or enumerated `order_id`.

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Vulnerability Details for Tutor LMS – eLearning and online course solution

Software Type Plugin
Software Slug tutor (view on wordpress.org)
Patched? Yes
Remediation Update to version 3.9.8, or a newer patched version
Affected Version
  • <= 3.9.7
Patched Version
  • 3.9.8

Recent vulnerabilities in Tutor LMS – eLearning and online course solution

# Title CVE ID CVSS Researchers Date
1 Tutor LMS <= 3.9.13 - Authenticated (Author+) Stored Cross-Site Scripting via Lesson Attachment Title CVE-2026-13443 6.4 skyv3il June 30, 2026
2 Tutor LMS <= 3.9.11 - Authenticated (Administrator+) SQL Injection via 'data' Parameter CVE-2026-10736 4.9 s1kr10s June 17, 2026
3 Tutor LMS <= 3.9.9 - Insecure Direct Object Reference to Authenticated (Instructor+) Arbitrary Post Deletion via 'course' GET Parameter CVE-2026-6965 5.3 molten bit May 12, 2026
4 Tutor LMS – eLearning and online course solution <= 3.9.7 - Missing Authorization CVE-2026-40743 5.3 lagi bljr April 20, 2026
5 Tutor LMS <= 3.9.8 - Authenticated (Admin+) SQL Injection via 'date' Parameter CVE-2026-6080 6.5 PRISM April 16, 2026
6 Tutor LMS <= 3.9.8 - Authenticated (Subscriber+) Arbitrary Course Content Manipulation via tutor_update_course_content_order CVE-2026-5502 5.3 momopon1415 April 16, 2026
7 Tutor LMS <= 3.9.7 - Authenticated (Subscriber+) Insecure Direct Object Reference to Arbitrary Course Content Modification CVE-2026-3371 4.3 Hunter Jensen (skid) April 10, 2026
8 Tutor LMS <= 3.9.7 - Missing Authorization to Authenticated (Subscriber+) Unauthorized Private Course Enrollment CVE-2026-3358 5.4 Mohammad Amin Hajian (mamadrce) April 10, 2026
9 Tutor LMS – eLearning and online course solution <= 3.9.4 - Authenticated (Subscriber+) Insecure Direct Object Reference CVE-2025-32223 4.3 daroo March 16, 2026
10 Tutor LMS <= 3.9.7 - Missing Authorization CVE-2026-40740 4.3 3diklab March 15, 2026

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