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CVE-2026-16759

6.5 · MEDIUM

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…

Published Aug 28, 2026CWE-74EPSS 0.62%

Overview

CVE-2026-16759 is a medium-severity vulnerability. It was published on August 28, 2026 and has a CVSS 3.1 base score of 6.5 (MEDIUM).

This vulnerability has a CVSS 3.1 base score of 6.5, rated MEDIUM. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

Technical 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.

Remediation

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

References

Refplugins.trac.wordpress.org/browser/tutor/tags/4.0.1/classes/Course_Filter.php#L224Refplugins.trac.wordpress.org/browser/tutor/tags/4.0.1/classes/Course_Filter.php#L58Refplugins.trac.wordpress.org/browser/tutor/tags/4.0.1/includes/tutor-template-functions.php#L118Refplugins.trac.wordpress.org/browser/tutor/tags/4.0.1/includes/tutor-template-functions.php#L128Refplugins.trac.wordpress.org/browser/tutor/tags/4.0.1/templates/single-content-loader.php#L30Refplugins.trac.wordpress.org/browser/tutor/tags/4.0.1/templates/single-content-loader.php#L71Refplugins.trac.wordpress.org/changeset/3653079/tutor/trunk/templates/single-content-loader.phpRefplugins.trac.wordpress.org/changeset?old_path=%2Ftutor/tags/4.0.5&new_path=%2Ftutor/tags/4.0.6Refwww.wordfence.com/threat-intel/vulnerabilities/id/65f68a49-8ded-479f-a9c3-187703bfae65?source=cve

How CyberStrike helps

Frequently asked questions

What is CVE-2026-16759?

CVE-2026-16759 is a medium-severity vulnerability. It was published on August 28, 2026 and has a CVSS 3.1 base score of 6.5 (MEDIUM).

How severe is CVE-2026-16759?

This vulnerability has a CVSS 3.1 base score of 6.5, rated MEDIUM. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

How do I fix or remediate CVE-2026-16759?

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

How can CyberStrike help with CVE-2026-16759?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2026-16759 is actually reachable in your own applications and APIs, then verifies each finding before reporting it. That tells you if the weakness is a real, exploitable risk in your environment or a false positive you can safely deprioritize.

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