# CVE-2026-89081: Tutor LMS reflected cross-site scripting in search parameter

Source: https://junglewise.ai/threats/cve-2026-89081-the-tutor-lms-elearning-and-online-course-solution-plugin-for  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-09-19. Updated: 2026-09-26  
License: CC BY 4.0 with a link back

CVE-2026-89081 · Severity: medium · CVSS 6.1 · Published 2026-09-19

Tutor LMS is a WordPress plugin that provides online course management and eLearning functionality. The plugin fails to properly sanitize user input in its search feature, allowing attackers to inject malicious scripts that execute in users' browsers. An attacker can trick a user into clicking a crafted link to steal session data, deface content, or perform unauthorized actions on behalf of the victim.

Technologies: [Themeum Tutor LMS](https://junglewise.ai/threats/technologies/tutor-lms). Vendors: [Themeum](https://junglewise.ai/threats/vendors/themeum).

## Quick answers

**Is CVE-2026-89081 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-89081 being exploited in the wild.

**How severe is CVE-2026-89081?** Medium severity, with a CVSS score of 6.1, published 19 September 2026.

**Which products and versions are affected?** Themeum Tutor LMS up to and including 4.0.8.

**Is there a fix for CVE-2026-89081?** No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.

**How is CVE-2026-89081 attacked?** It is attacked over the network, in a web application.

**Am I affected by CVE-2026-89081?** Check whether you run Themeum Tutor LMS at an affected version. 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 plugin is vulnerable to reflected cross-site scripting (XSS) via insufficient input sanitization and output escaping of the 'search' parameter. The vulnerability affects all versions up to and including 4.0.8 and can be exploited by unauthenticated attackers through user interaction (link-click). An attacker gains the ability to execute arbitrary JavaScript in the context of an authenticated user's session.

## Affected products

- Themeum Tutor LMS up to and including 4.0.8

## Timeline

- 2026-09-19: disclosed

## References

- [https://plugins.trac.wordpress.org/browser/tutor/tags/4.0.7/classes/Dashboard.php](https://plugins.trac.wordpress.org/browser/tutor/tags/4.0.7/classes/Dashboard.php)
- [https://plugins.trac.wordpress.org/browser/tutor/tags/4.0.7/components/SearchFilter.php](https://plugins.trac.wordpress.org/browser/tutor/tags/4.0.7/components/SearchFilter.php)

## Related threats

- [Tutor LMS insecure direct object reference in API routing](https://junglewise.ai/threats/cve-2026-93779-the-tutor-lms-elearning-and-online-course-solution-plugin-for)
- [Themeum Tutor LMS stored cross-site scripting](https://junglewise.ai/threats/cve-2026-111407-improper-neutralization-of-input-during-web-page-generation)
- [Tutor LMS insecure direct object reference in course update](https://junglewise.ai/threats/cve-2026-92715-the-tutor-lms-elearning-and-online-course-solution-plugin-for)
- [Tutor LMS stored cross-site scripting via display_name](https://junglewise.ai/threats/cve-2026-93681-the-tutor-lms-elearning-and-online-course-solution-plugin-for)
- [Themeum Tutor LMS reflected cross-site scripting vulnerability](https://junglewise.ai/threats/cve-2026-42702-improper-neutralization-of-input-during-web-page-generation-cross)