The Tutor LMS – eLearning and online course solution plugin for WordPress is vulnerable to Insecure Direct Object Reference in versions up to and including 3.9.9. This is due to the getcourseidby() function unconditionally trusting the user-supplied course GET parameter as the authoritative course ID for content ownership lookups, which is then consumed by canusermanage(), the plugin's sole authorization gate for instructor-level operations, causing it to evaluate instructor membership against the attacker-controlled course rather than the course that actually owns the target content object. This makes it possible for authenticated attackers, with instructor-level access and above, to perform unauthorized operations on any other instructor's course content, including permanently deleting lessons, assignments, quizzes (with cascading deletion of all student attempt data), topics, announcements, and Q&A threads, as well as creating or modifying lessons, topics, and announcements in victim courses, manipulating student quiz grades, and reading unpublished lesson and quiz content.

The Tutor LMS plugin for WordPress is vulnerable to SQL Injection in versions up to and including 3.9.8. This is due to insufficient escaping on the 'date' parameter combined with direct interpolation into a SQL fragment before being passed to $wpdb->prepare(). This makes it possible for authenticated attackers with Admin-level access and above to append additional SQL queries and extract sensitive information from the database.

Missing Authorization vulnerability in Themeum Tutor LMS tutor allows Exploiting Incorrectly Configured Access Control Security Levels.This issue affects Tutor LMS: from n/a through <= 3.9.7.

The Tutor LMS – eLearning and online course solution plugin for WordPress is vulnerable to Insecure Direct Object Reference in all versions up to, and including, 3.9.7. This is due to missing authorization checks in the savecoursecontentorder() private method, which is called unconditionally by the tutorupdatecoursecontentorder AJAX handler. While the handler's contentparent branch includes a canusermanage() check, the savecoursecontentorder() call processes attacker-supplied tutortopicslessonssorting JSON without any ownership or capability verification. This makes it possible for authenticated attackers with Subscriber-level access or above to detach lessons from topics, reorder course content, and reassign lessons between topics in any course, including admin-owned courses, by sending a crafted AJAX request with manipulated topic and lesson IDs.

The Tutor LMS – eLearning and online course solution plugin for WordPress is vulnerable to unauthorized private course enrollment in all versions up to, and including, 3.9.7. This is due to missing poststatus validation in the enrollnow() and courseenrollment() functions. Both enrollment endpoints verify the nonce, user authentication, and whether the course is purchasable, but fail to check if the course has a private poststatus. This makes it possible for authenticated attackers with Subscriber-level access or above to enroll in private courses by sending a crafted POST request with the target course ID. The enrollment record is created in the database and the private course title and enrollment status are exposed in the subscriber's dashboard, though WordPress core access control prevents the subscriber from viewing the actual course content (returns 404). Enrollment in private courses should be restricted to users with the readprivateposts capability.

Authorization Bypass Through User-Controlled Key vulnerability in Themeum Tutor LMS tutor allows Exploiting Incorrectly Configured Access Control Security Levels.This issue affects Tutor LMS: from n/a through <= 3.9.4.

Improper Neutralization of Special Elements used in an SQL Command ('SQL Injection') vulnerability in Themeum Tutor LMS allows SQL Injection. This issue affects Tutor LMS: from n/a through 3.7.4.

Missing Authorization vulnerability in Themeum Tutor LMS allows Exploiting Incorrectly Configured Access Control Security Levels.This issue affects Tutor LMS: from n/a through 2.7.3.

Improper Neutralization of Special Elements used in an SQL Command ('SQL Injection') vulnerability in Themeum Tutor LMS.This issue affects Tutor LMS: from n/a through 2.7.2.

Improper Neutralization of Input During Web Page Generation (XSS or 'Cross-site Scripting') vulnerability in Themeum Tutor LMS allows Stored XSS.This issue affects Tutor LMS: from n/a through 2.7.3.

Improper Neutralization of Input During Web Page Generation (XSS or 'Cross-site Scripting') vulnerability in Themeum Tutor LMS allows Stored XSS.This issue affects Tutor LMS: from n/a through 2.7.2.

The Tutor LMS WordPress plugin before 2.3.0 does not sanitise and escape some of its settings, which could allow users such as subscriber to perform Stored Cross-Site Scripting attacks even when the unfilteredhtml capability is disallowed (for example in multisite setup)

The Tutor LMS WordPress plugin before 2.0.10 does not sanitise and escape the resetkey and userid parameters before outputting then back in attributes, leading to Reflected Cross-Site Scripting which could be used against high privilege users such as admin

The Tutor LMS WordPress plugin before 2.0.10 does not escape some course parameters, which could allow high privilege users such as admin to perform Stored Cross-Site Scripting attacks even when the unfilteredhtml capability is disallowed (for example in multisite setup)

The Tutor LMS WordPress plugin before 1.9.12 does not escape the search parameter before outputting it back in an attribute in an admin page, leading to a Reflected Cross-Site Scripting

The Tutor LMS WordPress plugin before 1.9.11 does not sanitise and escape user input before outputting back in attributes in the Student Registration page, leading to a Reflected Cross-Site Scripting issue

The Tutor LMS WordPress plugin before 1.9.9 does not escape some of its settings before outputting them in attributes, which could allow high privilege users to perform Cross-Site Scripting attacks even when the unfilteredhtml capability is disallowed.

The Tutor LMS – eLearning and online course solution WordPress plugin before 1.9.2 did not escape the Summary field of Announcements (when outputting it in an attribute), which can be created by users as low as Tutor Instructor. This lead to a Stored Cross-Site Scripting issue, which is triggered when viewing the Announcements list, and could result in privilege escalation when viewed by an admin.