CVE-2026-88963
Tutor LMS <= 4.0.8 - Authenticated (Subscriber+) Reflected DOM-Based Cross-Site Scripting via 'redirect_url' Parameter
CVSS Score
6.1
EPSS Score
0.0%
EPSS Percentile
0th
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.
| CWE | CWE-79 |
| Vendor | themeum |
| Product | tutor lms – elearning and online course solution |
| Published | Oct 16, 2026 |
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CVSS v3 Breakdown
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality
Integrity
Availability
Affected Versions
themeum / Tutor LMS – eLearning and online course solution
0 ≤ 4.0.8
References
wordfence.com: https://www.wordfence.com/threat-intel/vulnerabilities/id/f39a9570-a352-45f3-8644-2de2c1c709d2?source=cve plugins.trac.wordpress.org: https://plugins.trac.wordpress.org/changeset?reponame=&new=3700174%40tutor%2Ftags%2F4.0.9&old=3690454%40tutor%2Ftags%2F4.0.8 plugins.trac.wordpress.org: https://plugins.trac.wordpress.org/changeset/3700174/tutor/trunk/assets/js/tutor-order-details.js
Credits
Sevada797