CVE Catalog

CVE-2026-103899

HighCVSS 7.2
Published: Updated: Translated: NVD NIST

Exploitation Probability (EPSS)

Low risk
0.24%

14th percentile - higher than 14% of all known CVEs

Summary

The EU VAT Assistant for WooCommerce plugin for WordPress in versions up to and including 2.1.30.260413 is vulnerable to Stored Cross-Site Scripting via the 'vat_number' parameter due to insufficient input sanitization and output escaping. The stored payload executes in the administrator's browser context when reviewing an order via WooCommerce → Orders → Edit Order.

Risk Assessment

An unauthenticated attacker can inject scripts that execute in the administrator's context, enabling privilege escalation up to full site takeover via rogue administrator account creation.

Recommendation

Update the EU VAT Assistant for WooCommerce plugin to a version newer than 2.1.30.260413; until then, consider restricting access to the WooCommerce orders panel.

Related vulnerabilities

Original NVD description (English source)

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.

Vulnerability data from NVD (NIST) · CISA KEV · EPSS