Improper Neutralization of Special Elements used in an SQL Command ('SQL Injection') vulnerability in chrisbadgett LifterLMS allows SQL Injection. This issue affects LifterLMS: from n/a through 8.0.6.

The LifterLMS – WP LMS for eLearning, Online Courses, & Quizzes plugin for WordPress is vulnerable to Unauthenticated Post Trashing due to a missing capability check on the delete_access_plan function and the related AJAX calls in all versions up to, and including, 8.0.1. This makes it possible for unauthenticated attackers to change status to "Trash" for every published post, therefore limiting the availability of the website's content.

The LifterLMS – WP LMS for eLearning, Online Courses, & Quizzes plugin for WordPress is vulnerable to arbitrary post deletion due to a missing capability check on the 'llms_delete_cert' action in all versions up to, and including, 7.8.5. This makes it possible for authenticated attackers, with Subscriber-level access and above, to delete arbitrary posts.

The LifterLMS – WP LMS for eLearning, Online Courses, & Quizzes plugin for WordPress is vulnerable to blind SQL Injection via the 'order' parameter in all versions up to, and including, 7.7.5 due to insufficient escaping on the user supplied parameter and lack of sufficient preparation on the existing SQL query. This makes it possible for authenticated attackers, with administrator-level access and above, to append additional SQL queries into already existing queries that can be used to extract sensitive information from the database.

The LifterLMS – WordPress LMS Plugin for eLearning plugin for WordPress is vulnerable to SQL Injection via the orderBy attribute of the lifterlms_favorites shortcode in all versions up to, and including, 7.6.2 due to insufficient escaping on the user supplied parameter and lack of sufficient preparation on the existing SQL query. This makes it possible for authenticated attackers, with Contributor-level access and above, to append additional SQL queries into already existing queries that can be used to extract sensitive information from the database.

The LifterLMS – WordPress LMS Plugin for eLearning plugin for WordPress is vulnerable to unauthorized modification of data due to a missing capability check on the 'process_review' function in all versions up to, and including, 7.5.1. This makes it possible for unauthenticated attackers to publish an unrestricted number of reviews on the site.

The LifterLMS – WordPress LMS Plugin for eLearning plugin for WordPress is vulnerable to Directory Traversal in versions up to, and including, 7.4.2 via the maybe_serve_export function. This makes it possible for authenticated attackers, with administrator or LMS manager access and above, to read the contents of arbitrary CSV files on the server, which can contain sensitive information as well as removing those files from the server.