CVE-2026-88963
CVE-2026-88963 · Tutor LMS <= 4.0.8 - Authenticated (Subscriber+) Reflected DOM-Based Cross-Site Scripting via 'redirect_url' Parameter
This page contains facts from public vulnerability sources. Check the original advisory before updating.
The Tutor LMS – eLearning and online course solution plugin for WordPress is vulnerable to DOM-Based Cross-Site Scripting via the 'redirect_url' parameter in versions up to, and including, 4.0.8 This is due to insufficient input validation in the Topbar component's back button handler. This makes it possible for unauthenticated attackers to inject arbitrary web scripts that execute in the victim's browser whenever the victim accesses a page that includes the malicious payload.
CVSS 6.1 · Medium · EPSS 0.2%
- Published
- Updated
Affected products and versions
tutor lms – elearning and online course solution
- Versions
- ≥ 0, ≤ 4.0.8: Affected (semver)
No fix published
Original sources
- https://www.wordfence.com/threat-intel/vulnerabilities/id/f39a9570-a352-45f3-8644-2de2c1c709d2?source=cve
- https://plugins.trac.wordpress.org/changeset?reponame=&new=3700174%40tutor%2Ftags%2F4.0.9&old=3690454%40tutor%2Ftags%2F4.0.8
- https://plugins.trac.wordpress.org/changeset/3700174/tutor/trunk/assets/js/tutor-order-details.js
- https://nvd.nist.gov/vuln/detail/CVE-2026-88963