Tutor LMS <= 3.9.8 - Authenticated (Subscriber+) Arbitrary Course Content Manipulation via tutor_update_course_content_order
The Tutor LMS – eLearning and online course solution plugin for WordPress is vulnerable to unauthorized course content manipulation in versions up to and including 3.9.8. This is due to a missing authorization check in the tutor_update_course_content_order() function. The function only validates the nonce (CSRF protection) but does not verify whether the user has permission to manage course content. The can_user_manage() authorization check only executes when the 'content_parent' parameter is present in the request. When this parameter is omitted, the function proceeds directly to save_course_content_order() which manipulates the wp_posts table without any authorization validation. This makes it possible for authenticated attackers with subscriber-level access and above to detach all lessons from any topic, move lessons between topics, and modify the menu_order of course content, effectively allowing them to disrupt the structure of any course on the site.
Affected software
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| Platform | Package | Vulnerable versions | Fixed in |
|---|---|---|---|
| WordPress plugin | Tutor LMS – eLearning and online course solution | <= 3.9.8 | 3.9.9 |
References
- CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N- Weakness (CWE)
CWE-862- Platform
- WordPress
- Package
Tutor LMS – eLearning and online course solution- Disclosed
- 16.04.2026
- Updated
- 11.10.2026 10:23
Sources and licenses
Wordfence Intelligence - f32ae42d-dd1f-41d7-8ae4-ddec56d78ae6 - Wordfence Intelligence
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Copyright 2012-2026 Defiant Inc.
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Vulnerability history: Tutor LMS – eLearning and online course solution
All published vulnerabilities of this package (WordPress plugin), newest first. Shows whether this is a one-off slip or a package that needs watching.
- Total entries
- 92
- First → latest
- 02.2020 10.2026
- Without a fix
- 0
- Exploited in attacks
- 0
Severity breakdown
- Critical 3
- High 19
- Medium 69
- Low 1
Disclosures per year
- 2020: 1
- 2021: 14
- 2022: 2
- 2023: 8
- 2024: 21
- 2025: 4
- 2026: 42
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Tutor LMS <= 3.9.8 - Authenticated (Subscriber+) Arbitrary Course Content Manipulation via tutor_update_course_content_order this entry
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