The Extend B2B - Companies and Users Management for WooCommerce plugin for WordPress is vulnerable to Sensitive Information Exposure in all versions up to, and including, 2.1.4 via the register_company_api. This makes it possible for unauthenticated attackers to extract sensitive company data including owner and member WordPress user IDs, company billing email addresses, credit balances and full credit histories with admin user IDs, per-member purchase limits and spend totals, and shared-cart records containing purchase-order numbers.