CVE-2026-85570

The Tutor LMS plugin up to version 4.1.2 contains a Cross-site Scripting (Stored XSS) vulnerability due to improper neutralization of input during web page generation. This allows a malicious script to be stored and executed in a user's browser.

A race condition vulnerability in Tutor LMS by Themeum allows leveraging race conditions. Affects versions from n/a through 4.1.1.

The Tutor LMS plugin for WordPress up to version 4.0.1 is vulnerable to generic SQL Injection via the 'coupon_code' parameter due to insufficient escaping and lack of proper query preparation. Authenticated attackers with administrator-level access or higher can append additional SQL queries to existing ones, potentially extracting sensitive information from the database.

The Tutor LMS WordPress plugin before version 4.0.6 does not prevent request data from overwriting internal variables while rendering templates, allowing unauthenticated users to invoke arbitrary zero-argument PHP functions and receive their output.

The Tutor LMS plugin for WordPress (up to and including 4.1.2) is vulnerable to Insecure Direct Object Reference in init_routes due to missing validation on a user-controlled key. An authenticated attacker with subscriber-level access can read paid course lesson content without enrollment, retrieve quiz answer keys, and enumerate other users' data including instructors and administrators. Exploitation requires a valid Tutor LMS API key/secret pair.

The Tutor LMS plugin for WordPress (versions up to and including 4.1.0) is vulnerable to Stored Cross-Site Scripting via the display_name parameter due to insufficient input sanitization and output escaping. An authenticated attacker with subscriber-level access or above can inject arbitrary scripts into pages that execute when a user visits the injected page. Exploitation requires that a Legal Consent record exists for the attacker's user account, causing the View Logs button to appear in the wp-admin/users.php Consent Logs column.

The Tutor LMS WordPress plugin before 4.1.1 does not perform a capability check in a routine that regenerates its managed pages, allowing unauthenticated users to force-publish unpublished pages and overwrite their content, create missing ones, and change the options that reference them.

The Tutor LMS – eLearning and online course solution plugin for WordPress is vulnerable to Reflected Cross-Site Scripting via the 'tab' parameter in all versions up to and including 4.1.0 due to insufficient input sanitization and output escaping. This allows unauthenticated attackers to inject arbitrary web scripts that execute if they can trick a user into clicking a link. Exploitation requires the targeted lesson page to have an empty nav-items array, which occurs naturally when a lesson has no content, no attachments, and comments are disabled or the viewer is not logged in.

Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in Themeum Tutor LMS tutor allows Reflected XSS.This issue affects Tutor LMS: from n/a through 4.1.0.

The Tutor LMS plugin for WordPress in versions up to and including 4.0.7 is vulnerable to Insecure Direct Object Reference via the tutor_quiz_builder_save AJAX action due to missing validation that nested question_id, answer_id, deleted_question_ids[], and deleted_answer_ids[] values belong to a quiz/topic/course the requester is authorized to manage. An authenticated attacker with Instructor-level access or higher can overwrite content and re-parent arbitrary quiz questions/answers belonging to other instructors or administrators, and delete arbitrary quiz question and answer rows.