Reported vulnerability

YITH WooCommerce Waitlist Premium <= 3.35.0 - Authenticated (Subscriber+) Privilege Escalation to Admin via wp_ajax_yith_wcwtl_add_user

Published 8 Sept 2026

Updated 9 Sept 2026

CVE-2026-14359

Compare your installed software with the affected versions below. Follow the source’s remediation guidance and test an available update after taking a backup. A database entry describes a reported issue; it does not establish whether a particular website has been compromised.

Does this affect my version?

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Wordfence advisory

high · CVSS 8.8

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.

Severity vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

YITH WooCommerce Waitlist Premium

Software: plugin · yith-woocommerce-waiting-list-premium
Affected versions: Start version unspecified, through 3.35.0
Fix availability: Fix available
Fixed versions: 3.36.0

Recommended action

Update to version 3.36.0, or a newer patched version

Further references (1)

wordfence.com/threat-intel/vulnerabilities/id/48660afe-1e03-4bf5-b821-6538a4daf201?source=api-prod

Data sources and licences

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Source: Wordfence

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Questions about this vulnerability

Which versions of YITH WooCommerce Waitlist Premium are affected?

Wordfence lists these affected versions: Start version unspecified, through 3.35.0. Use the version checker above to compare your installed release with this report.

Is a fix available for YITH WooCommerce Waitlist Premium?

Wordfence reports a fix for this issue in YITH WooCommerce Waitlist Premium. It lists these fixed versions: 3.36.0. Back up your website and test the recommended update before applying it to your live site.

Where can I find my installed plugin version?

In WordPress, open Plugins > Installed Plugins and find the version shown beneath the plugin name.

Does an affected version mean my website has been hacked?

An affected version means the installed release matches a vulnerability described in this report. It does not show whether anyone has exploited it on your website. The checker compares version numbers with stored reports; it does not inspect your website.

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