---
id: CVE-2026-14359
title: >-
  The YITH WooCommerce Waitlist Premium plugin for WordPress is vulnerable to
  Privilege Escalation in versions up to, and including, 3.35.0
summary: >-
  The YITH WooCommerce Waitlist Premium plugin for WordPress is vulnerable to
  Privilege Escalation in versions up to, and including, 3.35.0. This is due to
  the add_user_in_waiting_list() function registered on the
  wp_ajax_yith_wcwtl_add_us…
severity: high
cvss: 8.8
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H'
cwe:
  - CWE-269
vendor: Yith
product: YITH WooCommerce Waitlist Premium
affected:
  - woocommerce_waitlist_premium <= 3.35.0
published: '2026-09-09'
updated: '2026-09-09'
sourceUpdated: '2026-09-09T16:17:00.840'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-14359'
references:
  - url: >-
      https://www.wordfence.com/threat-intel/vulnerabilities/id/48660afe-1e03-4bf5-b821-6538a4daf201?source=cve
    label: security@wordfence.com
  - url: 'https://yithemes.com/'
    label: security@wordfence.com
tags:
  - nvd
  - cve.org
ssvc:
  exploitation: none
  automatable: 'no'
  technicalImpact: total
  timestamp: '2026-09-09T15:06:21.688017Z'
epss: 0.00239
epssPercentile: 0.13258
ingestedAt: '2026-09-09T09:05:07.927Z'
---

## Overview

The YITH WooCommerce Waitlist Premium plugin for WordPress is vulnerable to Privilege Escalation in versions up to, and including, 3.35.0. This is due to the add_user_in_waiting_list() function registered on the wp_ajax_yith_wcwtl_add_user action being missing both a capability check and a nonce verification, and using parse_str() + extract() to import attacker-controlled variables from $_POST['params'] that are then passed to wp_create_user() and $user->set_role(). This makes it possible for authenticated attackers, with Subscriber-level access and above, to elevate their privileges to that of an administrator by creating a new user account and assigning it the administrator role.

## Remediation

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