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.

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Fixes

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History

Wed, 09 Sep 2026 16:30:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}


Wed, 09 Sep 2026 08:45:00 +0000

Type Values Removed Values Added
Description 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.
Title YITH WooCommerce Waitlist Premium <= 3.35.0 - Authenticated (Subscriber+) Privilege Escalation to Admin via wp_ajax_yith_wcwtl_add_user
Weaknesses CWE-269
References
Metrics cvssV3_1

{'score': 8.8, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H'}


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cve-icon MITRE

Status: PUBLISHED

Assigner: Wordfence

Published:

Updated: 2026-09-09T15:06:29.751Z

Reserved: 2026-07-01T18:55:01.201Z

Link: CVE-2026-14359

cve-icon Vulnrichment

Updated: 2026-09-09T15:06:25.746Z

cve-icon NVD

Status : Deferred

Published: 2026-09-09T09:17:10.450

Modified: 2026-09-09T16:17:00.840

Link: CVE-2026-14359

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-09-09T10:15:09Z

Weaknesses