The LearnPress – WordPress LMS Plugin plugin for WordPress is vulnerable to arbitrary file uploads due to missing file type validation in the 'save_post_materials' function in versions up to, and including, 4.2.6.5. This makes it possible for authenticated attackers, with Instructor-level permissions and above, to upload arbitrary files on the affected site's server which may make remote code execution possible.

The LearnPress – WordPress LMS Plugin plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the ‘layout_html’ parameter in all versions up to, and including, 4.2.6.5 due to insufficient input sanitization and output escaping. This makes it possible for authenticated attackers, with contributor-level access and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page.

The LearnPress – WordPress LMS Plugin plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the _id value in all versions up to, and including, 4.2.6.4 due to insufficient input sanitization and output escaping on user supplied attributes. This makes it possible for authenticated attackers, with contributor-level access and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page.

Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in ThimPress LearnPress Export Import allows Reflected XSS.This issue affects LearnPress Export Import: from n/a through 4.0.3.

The LearnPress – WordPress LMS Plugin plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the Course, Lesson, and Quiz title and content in all versions up to, and including, 4.2.6.3 due to insufficient input sanitization and output escaping. This makes it possible for authenticated attackers, with LP Instructor-level access, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page.

The LearnPress – WordPress LMS Plugin plugin for WordPress is vulnerable to Insecure Direct Object Reference in all versions up to, and including, 4.2.6.3 due to missing validation on a user controlled key when looking up order information. This makes it possible for authenticated attackers to obtain information on orders placed by other users and guests, which can be leveraged to sign up for paid courses that were purchased by guests. Emails of other users are also exposed.

Improper Neutralization of Special Elements used in an SQL Command ('SQL Injection') vulnerability in ThimPress LearnPress Export Import.This issue affects LearnPress Export Import: from n/a through 4.0.3.

The LearnPress – WordPress LMS Plugin plugin for WordPress is vulnerable to Cross-Site Request Forgery in all versions up to, and including, 4.0.0. This is due to missing or incorrect nonce validation on the filter_users functions. This makes it possible for unauthenticated attackers to elevate their privileges to that of a teacher via a forged request granted they can trick a site administrator into performing an action such as clicking on a link.

The LearnPress WordPress plugin before 4.2.5.5 does not sanitise and escape user input before outputting it back in the page, leading to a Reflected Cross-Site Scripting which could be used against high privilege users such as admin.

The LearnPress plugin for WordPress is vulnerable to Command Injection in all versions up to, and including, 4.2.5.7 via the get_content function. This is due to the plugin making use of the call_user_func function with user input. This makes it possible for unauthenticated attackers to execute any public function with one parameter, which could result in remote code execution.