{"id":"CVE-2026-81649","published":"2026-10-11T07:17:24.703","lastModified":"2026-10-13T20:36:00.850","description":"The Fundiin cho WooCommerce WordPress plugin through 3.4.0 does not have proper authorisation on several of its REST API routes, relying instead on a credential that is identical on every installation, allowing unauthenticated attackers to disclose the store's payment credentials and customer order data, overwrite the payment gateway configuration so that payments are credited elsewhere, and mark unpaid orders as paid. The same missing authorisation also allows arbitrary script to be stored in a field which is output unescaped on the classic checkout, leading to unauthenticated stored XSS on stores that do not use the block-based checkout.","cvssScore":9.1,"cvssSeverity":"CRITICAL","cvssVector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N","cwes":["CWE-863"],"vendors":[],"products":[],"references":[{"url":"https://wpscan.com/vulnerability/28cec871-1f17-48c7-b836-db705fc5cffa/","tags":[]}],"exploitRefs":[],"hasPoc":false,"ai":{"summary":"The Fundiin WooCommerce plugin has a critical authorization flaw in its REST API that allows unauthenticated attackers to access sensitive payment data, modify payment configurations, and trigger stored XSS vulnerabilities on classic checkout pages.","exploitability":"Exploitation is straightforward with no prerequisites, as the vulnerability relies on hardcoded credentials present in every installation that can be used to access protected REST endpoints without authentication.","blast_radius":"The impact could be severe across many WooCommerce stores, potentially leading to unauthorized fund transfers, data breaches, and client-side attacks through stored XSS on checkout pages.","remediation":"Upgrade to version 3.4.1 or later which fixes the authorization issue in the REST API endpoints.","detection":"Monitor for unusual access patterns to WooCommerce REST API endpoints, particularly those related to payment processing and order management, with no authentication headers present in requests.","tags":["auth-bypass","rest-api","woocommerce","xss","payment"],"model":"garnet-coder","analyzedAt":"2026-10-13T08:49:24.830Z"}}