CVE-2026-15369

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.

CVSS v3 9.8 CRITICAL

9.8^/10

CVSS v3 : CRITICAL

Vector :

Exploitability : 3.9 / Impact : 5.9

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
https://woocommerce.com/products/custom-user-registration-fields-for-woocommerce/
https://www.wordfence.com/threat-intel/vulnerabilities/id/715723e7-5820-4a64-848f-f89b5b73a681?source=cve

Configurations

No configuration.

History

No history.

Information

Published : 2026-08-29 20:16

Updated : 2026-09-01 03:16

NVD link : CVE-2026-15369

Mitre link : CVE-2026-15369

CVE.ORG link : CVE-2026-15369

JSON object : View

Products Affected

No product.

CWE

CWE-269

Improper Privilege Management

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