# CVE-2026-14187: Tutor LMS privilege escalation via IDOR in course access control

Source: https://junglewise.ai/threats/cve-2026-14187-tutor-lms-privilege-escalation-via-idor-in-course-access-control  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-08-22. Updated: 2026-09-25  
License: CC BY 4.0 with a link back

CVE-2026-14187 · Severity: low · CVSS 2.7 · Published 2026-08-22

Tutor LMS is a WordPress plugin for creating and managing online courses. The plugin fails to properly restrict which instructors can view private courses, allowing any instructor to read course content belonging to other instructors. This could expose sensitive course materials, lesson plans, and student assessment data to unauthorized parties.

## Quick answers

**Is CVE-2026-14187 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-14187 being exploited in the wild.

**How severe is CVE-2026-14187?** Low severity, with a CVSS score of 2.7, published 22 August 2026.

**Which products and versions are affected?** Tutor LMS Tutor LMS before 4.0.6.

**Is there a fix for CVE-2026-14187?** A patch was published on 2026-04-15: Fixed in version 4.0.6 Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.

**How is CVE-2026-14187 attacked?** It is attacked over the network, in a software library.

**Am I affected by CVE-2026-14187?** Check whether anything you run is named in the advisory. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

## Technical details

The vulnerability is an Insecure Direct Object Reference (IDOR) affecting the WordPress REST API /wp-json/wp/v2/courses endpoint. The plugin does not enforce per-object ownership checks on the course content type; instead, it relies solely on WordPress's role-wide read_private_tutor_courses capability. An authenticated attacker with the instructor role can enumerate and read private courses owned by other instructors via the collection route (e.g., ?status=private) or target specific courses by ID, bypassing the plugin's rest_request_before_callbacks gate which only operates on single-object requests. Single-object read attempts and modification/deletion attempts on other instructors' courses correctly return 403 Forbidden. The vulnerability is fixed in version 4.0.6.

## Affected products

- Tutor LMS Tutor LMS before 4.0.6

## Timeline

- 2026-08-20: disclosed
- 2026-04-15: patched: Fixed in version 4.0.6

## References

- [https://wpscan.com/vulnerability/fb006829-e298-4b22-9d62-293a3b917ccd/](https://wpscan.com/vulnerability/fb006829-e298-4b22-9d62-293a3b917ccd/)