CVEvulnerability
CVE-2026-103899
7.2 HIGH
Official page ↗
- Status
- Deferred
- Published
- 2026-10-17
- Last modified
- 2026-10-19
- Assigner
- [email protected]
- CVSS 3.1 ([email protected])
- 7.2 HIGH — CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N
- Weaknesses
- CWE-79
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.
Related
Weakness · CWE (1)
- CWE-79 Improper Neutralization of Input During Web Page Generation weakness
References
- https://plugins.trac.wordpress.org/browser/woocommerce-eu-vat-assistant/tags/2.1.30.260413/src/lib/classes/integration/admin/orders_integration.php#L238 plugins.trac.wordpress.org
- https://plugins.trac.wordpress.org/browser/woocommerce-eu-vat-assistant/tags/2.1.30.260413/src/lib/classes/integration/vat_number_validation/validators/vat_number_validator.php#L132 plugins.trac.wordpress.org
- https://plugins.trac.wordpress.org/browser/woocommerce-eu-vat-assistant/tags/2.1.30.260413/src/lib/classes/order/order.php#L56 plugins.trac.wordpress.org
- https://plugins.trac.wordpress.org/browser/woocommerce-eu-vat-assistant/tags/2.1.30.260413/src/plugin-main.php#L1655 plugins.trac.wordpress.org
- https://plugins.trac.wordpress.org/browser/woocommerce-eu-vat-assistant/tags/2.1.30.260413/src/plugin-main.php#L901 plugins.trac.wordpress.org
- https://plugins.trac.wordpress.org/browser/woocommerce-eu-vat-assistant/tags/2.1.30.260413/src/views/admin/order-vat-info-box.php#L173 plugins.trac.wordpress.org
- https://www.wordfence.com/threat-intel/vulnerabilities/id/e2cd7c07-e119-4064-a7a9-08c81409f90a?source=cve www.wordfence.com