Live › vulnerability › CVE-2026-103899
Go to dashboardThe EU VAT Assistant for WooCommerce WordPress plugin fails to sanitize the vat_number parameter, so unauthenticated visitors can store scripts that run later. When an administrator opens the order in WooCommerce, the script runs in their browser and can create a rogue administrator account, giving full site takeover.
Summary written from the sources below. Check the originals before acting.
First seen by InfraStack 2026-10-23 21:57 UTC. All times on this page are UTC.
Any WordPress site running the EU VAT Assistant for WooCommerce plugin at version or earlier is exposed, because the vat_number field accepts unauthenticated input. Sites that do not run this plugin can skip it. The sources do not say whether a default configuration is enough to be exploited.
2.1.30.260413No product ranges from the sources yet.
2.1.30.2604132.1.30.260413; the sources do not name the patched versionEach row is the first time that source carried this signal. The analyst’s rows are its own findings.
The EU VAT Assistant for WooCommerce plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'vat_number' parameter in all versions up to, and including, 2.1.30.260413 due to insufficient input sanitization and output escaping. This makes it possible for unauthenticated attackers to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page. The stored payload executes in the administrator's browser context when reviewing an order via WooCommerce → Orders → Edit Order, enabling privilege escalation up to and including full site takeover via rogue administrator account creation.
This page as .md · .json · in your agent: get_signal("CVE-2026-103899")
NVD data is provided by NIST and is public domain. Posts quoted belong to their authors.