CVE-2026-14359 Privilege escalation in YITH WooCommerce Waitlist Premium
Authenticated subscribers can escalate privileges to administrator by exploiting missing capability checks and unsafe variable extraction in the YITH WooCommerce Waitlist Premium plugin.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-14359?
CVE-2026-14359 is a high-severity vulnerability in YITH WooCommerce Waitlist Premium, published on 9 Sep 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official 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.
Weakness: CWE-269
Which versions are affected by CVE-2026-14359?
How do I fix CVE-2026-14359?
No fix has been published for CVE-2026-14359 yet. Limit exposure of the affected software until one is available.
Is CVE-2026-14359 being exploited?
There is no known exploitation of CVE-2026-14359 in the wild and no public exploit code.
Sources
Also known as GHSA-jg5j-77hp-vqmp.