---
id: CVE-2026-15022
title: >-
  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 p…
summary: >-
  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 p…
severity: medium
cvss: 6.5
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N'
cwe:
  - CWE-89
published: '2026-07-16'
updated: '2026-07-18'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-15022'
references:
  - url: >-
      https://plugins.trac.wordpress.org/browser/tutor/tags/3.9.13/classes/Quiz.php#L442
    label: security@wordfence.com
  - url: >-
      https://plugins.trac.wordpress.org/browser/tutor/tags/3.9.13/classes/Quiz.php#L626
    label: security@wordfence.com
  - url: >-
      https://plugins.trac.wordpress.org/browser/tutor/tags/3.9.13/helpers/QueryHelper.php#L951
    label: security@wordfence.com
  - url: >-
      https://plugins.trac.wordpress.org/browser/tutor/tags/3.9.13/restapi/REST_Quiz.php#L286
    label: security@wordfence.com
  - url: >-
      https://plugins.trac.wordpress.org/browser/tutor/tags/3.9.13/restapi/REST_Quiz.php#L384
    label: security@wordfence.com
  - url: >-
      https://plugins.trac.wordpress.org/browser/tutor/tags/3.9.13/restapi/REST_Quiz.php#L415
    label: security@wordfence.com
  - url: >-
      https://plugins.trac.wordpress.org/browser/tutor/tags/3.9.9/classes/Quiz.php#L442
    label: security@wordfence.com
  - url: >-
      https://plugins.trac.wordpress.org/browser/tutor/tags/3.9.9/classes/Quiz.php#L626
    label: security@wordfence.com
  - url: >-
      https://plugins.trac.wordpress.org/browser/tutor/tags/3.9.9/helpers/QueryHelper.php#L951
    label: security@wordfence.com
  - url: >-
      https://plugins.trac.wordpress.org/browser/tutor/tags/3.9.9/restapi/REST_Quiz.php#L286
    label: security@wordfence.com
  - url: >-
      https://plugins.trac.wordpress.org/browser/tutor/tags/3.9.9/restapi/REST_Quiz.php#L384
    label: security@wordfence.com
  - url: >-
      https://plugins.trac.wordpress.org/browser/tutor/tags/3.9.9/restapi/REST_Quiz.php#L415
    label: security@wordfence.com
  - url: >-
      https://www.wordfence.com/threat-intel/vulnerabilities/id/8cd603aa-c4d4-488c-b134-6983240c3a18?source=cve
    label: security@wordfence.com
tags:
  - nvd
epss: 0.00572
epssPercentile: 0.44914
ingestedAt: '2026-07-18T18:24:14.521Z'
---

## Overview

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.

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.