CVE-2026-16759

Description

The Tutor LMS – eLearning and online course solution plugin for WordPress is vulnerable to Remote Code Execution limited to zero-argument function invocation in all versions up to, and including, 4.0.5 via the tutor_course_filter_ajax AJAX action. This is due to missing authorization on the handler combined with unsanitized array keys being passed to extract() inside tutor_load_template(), allowing attacker-controlled POST data to overwrite the local $template variable and, in the resulting templates/single-content-loader.php template, the $method_map and $context variables invoked at $method_map[$context](). This makes it possible for unauthenticated attackers to call an arbitrary zero-argument PHP function server-side and, via WordPress core edit_user(), to create a persistent subscriber-level account from request parameters.

CVSS Vector

References

• https://plugins.trac.wordpress.org/browser/tutor/tags/4.0.1/classes/Course_Filter.php#L224
• https://plugins.trac.wordpress.org/browser/tutor/tags/4.0.1/classes/Course_Filter.php#L58
• https://plugins.trac.wordpress.org/browser/tutor/tags/4.0.1/includes/tutor-template-functions.php#L118
• https://plugins.trac.wordpress.org/browser/tutor/tags/4.0.1/includes/tutor-template-functions.php#L128
• https://plugins.trac.wordpress.org/browser/tutor/tags/4.0.1/templates/single-content-loader.php#L30
• https://plugins.trac.wordpress.org/browser/tutor/tags/4.0.1/templates/single-content-loader.php#L71
• https://plugins.trac.wordpress.org/changeset/3653079/tutor/trunk/templates/single-content-loader.php
• https://plugins.trac.wordpress.org/changeset?old_path=%2Ftutor/tags/4.0.5&new_path=%2Ftutor/tags/4.0.6
• https://www.wordfence.com/threat-intel/vulnerabilities/id/65f68a49-8ded-479f-a9c3-187703bfae65?source=cve