CVE-2026-15369 Privilege escalation in Custom User Registration Fields for WooCommerce
Unauthenticated attackers can escalate privileges to Administrator by manipulating the user role parameter during checkout if role selection is enabled.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-15369?
CVE-2026-15369 is a critical vulnerability in Addify Custom User Registration Fields for WooCommerce, published on 29 Aug 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
The Custom User Registration Fields for WooCommerce plugin for WordPress is vulnerable to Privilege Escalation in versions up to, and including, 2.2.3. This is due to the plugin accepting an attacker-controlled afreg_select_user_role value from the unauthenticated WooCommerce Store API /wc/store/v1/checkout request in the af_reg_checkout_data_to_order_meta_data_block() function, persisting it in order meta, and then passing it directly to WP_User::add_role() in the af_reg_custom_order_processing_function() function (hooked to woocommerce_thankyou) without validating against the plugin's admin-configured allowed role list. This makes it possible for unauthenticated attackers to elevate their privileges to Administrator by creating an account during checkout with a modified JSON body specifying administrator (or any other role slug) as the desired role. Note: The exploit requires the "User Role Selection" setting to be enabled.
Weakness: CWE-269
Which versions are affected by CVE-2026-15369?
How do I fix CVE-2026-15369?
No fix has been published for CVE-2026-15369 yet. Limit exposure of the affected software until one is available.
Is CVE-2026-15369 being exploited?
There is no known exploitation of CVE-2026-15369 in the wild and no public exploit code.
Sources
Also known as GHSA-8fc6-vv8j-hx7j.