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CVE-2026-88963

MEDIUM 6.1 CVSS 3.1
Published
October 16, 2026
Last modified
October 16, 2026
NVD status
Deferred
Reported by
security@wordfence.com
Weakness
CWE-79
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

Description

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.

Affected WordPress components

A confirmed match is backed by the plugin or theme slug. A possible match is based on the product name only and should be verified.

Affected products and versions

  • themeum Tutor LMS – eLearning and online course solution — Up to and including 4.0.8

References

  • plugins.trac.wordpress.org https://plugins.trac.wordpress.org/changeset/3700174/tutor/trunk/assets/js/tutor-order-details.js
  • 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
  • www.wordfence.com https://www.wordfence.com/threat-intel/vulnerabilities/id/f39a9570-a352-45f3-8644-2de2c1c709d2?source=cve
  • nvd.nist.gov Official NVD record