CVE-2026-16759 json
Tutor LMS <= 4.0.5 - Unauthenticated Remote Code Execution via 'template' and 'data' POST Parameters
published 2026-08-28 2 mo ago modified 2026-08-28 2 mo ago also EUVD-2026-67406
- cvss
- 6.5
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.7%
- EPSS 0.7% chance of exploitation in 30 days, percentile 55%
- public exploits
- 0
- none known
Summary
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.
CISA SSVC
- Exploitation
- none
- Automatable
- yes
- Technical impact
- partial
- Assessed
- 2 mo ago
Exploit prediction
0.75% chance of exploitation in the next 30 days, higher than 55% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 3.1 | 6.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N |
Affected products
- themeum Tutor LMS – eLearning and online course solution
Classification
- Weakness
-
- CWE-74 Improper Neutralization of Special Elements in Output Used by a Downstream Component
- Technology feeds
References
- wordfence.com /threat-intel/vulnerabilities/id/65f68a49-8ded-479f-a9c3-187703bfae65?source=cve
- plugins.trac.wordpress.org /browser/tutor/tags/4.0.1/templates/single-content-loader.php#L71
- plugins.trac.wordpress.org /browser/tutor/tags/4.0.1/templates/single-content-loader.php#L30
- plugins.trac.wordpress.org /browser/tutor/tags/4.0.1/includes/tutor-template-functions.php#L118
- plugins.trac.wordpress.org /browser/tutor/tags/4.0.1/includes/tutor-template-functions.php#L128
- plugins.trac.wordpress.org /browser/tutor/tags/4.0.1/classes/Course_Filter.php#L224
- plugins.trac.wordpress.org /browser/tutor/tags/4.0.1/classes/Course_Filter.php#L58
- plugins.trac.wordpress.org /changeset/3653079/tutor/trunk/templates/single-content-loader.php
- plugins.trac.wordpress.org /changeset?old_path=%2Ftutor/tags/4.0.5&new_path=%2Ftutor/tags/4.0.6
Sources
- CVE List CVE-2026-16759
- NVD CVE-2026-16759
Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.