SQL Injection in Themeum Tutor Lms – Elearning And Online Course Solution
CVE-2026-15022
The Tutor LMS – eLearning and online course solution plugin for WordPress is vulnerable to generic SQL Injection via Stored Quiz Answer Array in all versions up to, and including, 4.0.0 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 custom-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 payload is stored at quiz-attempt time via the wp_ajax_tutor_quiz_abandon handler, but the injected SQL executes only when a privileged user or Tutor REST API key holder requests the /wp-json/tutor/v1/quiz-attempt-details/{id} endpoint, making this a second-order (stored) injection chain.
Vulnerability class: SQL Injection
Published · last modified .
CVSS v3 metric
CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N.
EPSS exploit prediction
EPSS: 0.006 (46.6th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 47th percentile — 46.6% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.006 · newest: 0.006 · change: 0.000
Affected products
Weakness classification (CWE)
References
- www.wordfence.com/threat-intel/vulnerabilities/id/8cd603aa-c4d4-488c-b134-69832…
- plugins.trac.wordpress.org/browser/tutor/tags/3.9.13/restapi/REST_Quiz.php
- plugins.trac.wordpress.org/browser/tutor/tags/3.9.13/restapi/REST_Quiz.php
- plugins.trac.wordpress.org/browser/tutor/tags/3.9.13/restapi/REST_Quiz.php
- plugins.trac.wordpress.org/browser/tutor/tags/3.9.13/classes/Quiz.php
- plugins.trac.wordpress.org/browser/tutor/tags/3.9.13/classes/Quiz.php
- plugins.trac.wordpress.org/browser/tutor/tags/3.9.13/helpers/QueryHelper.php
- plugins.trac.wordpress.org/browser/tutor/tags/3.9.9/restapi/REST_Quiz.php
- plugins.trac.wordpress.org/browser/tutor/tags/3.9.9/restapi/REST_Quiz.php
- plugins.trac.wordpress.org/browser/tutor/tags/3.9.9/restapi/REST_Quiz.php
Frequently asked questions
- What is CVE-2026-15022?
- CVE-2026-15022 is a medium-severity vulnerability in Themeum Tutor Lms – Elearning And Online Course Solution, classified under SQL Injection. CVSS score: 6.5/10. Published 2026-07-16.
- How severe is CVE-2026-15022?
- Medium severity. CVSS v3 base score is 6.5 out of 10.