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    CVE-2026-88963

    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.

    Published:Oct 16, 2026
    Last Modified:Oct 18, 2026
    EPS:Oct 16, 2026
    EPSS Score:0.00194
    CVSS Score:6.1

    Affected Products

    Vendor
    Themeum
    Product
    Tutor Lms
    Vendor
    Wordpress-extensions
    Product
    Tutor Lms

    Exploits

    No exploit reference

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    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High