Vulnerability in daigo75 EU VAT Assistant for WooCommerce

[ Description ]Official description

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.

[ Fixes ]Fixes and patches

No fix or interim patch is linked from our sources yet. Check the vendor references below and limit exposure of affected systems until a fix is available.

[ References ]References

• plugins.trac.wordpress.org/browser/woocommerce-eu-vat-assistant/tags/2.1.30.260413/src/…
• plugins.trac.wordpress.org/browser/woocommerce-eu-vat-assistant/tags/2.1.30.260413/src/…
• plugins.trac.wordpress.org/browser/woocommerce-eu-vat-assistant/tags/2.1.30.260413/src/…
• plugins.trac.wordpress.org/browser/woocommerce-eu-vat-assistant/tags/2.1.30.260413/src/…
• plugins.trac.wordpress.org/browser/woocommerce-eu-vat-assistant/tags/2.1.30.260413/src/…
• plugins.trac.wordpress.org/browser/woocommerce-eu-vat-assistant/tags/2.1.30.260413/src/…
• www.wordfence.com/threat-intel/vulnerabilities/id/e2cd7c07-e119-4064-a7a9-08c81409f90a