CVE-2026-100316CWE-79cross-site-scripting

CVE-2026-100316

High · published October 17, 2026

CVSS v3.1
7.2
EPSS
0%
Percentile
18.5
In the wild
Unconfirmed
What it is

The European VAT Compliance Assistant for WooCommerce plugin for WordPress is vulnerable to Stored Cross-Site Scripting via CF-IPCountry Header in all versions up to, and including, 1.36.10 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 malicious header value is persisted verbatim into order post-meta during a guest checkout, meaning no account or authentication is required to plant the payload.

The record
Technical detail
CVSS v3.1
7.2 · HIGH
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N
CVSS v4.0
Not supplied
EPSS
0.00272 · 18.5th percentile
Weakness
CWE-79 · Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
Published
2026-10-17T12:16Z
References (6)
https://plugins.trac.wordpress.org/browser/woocommerce-eu-vat-compliance/tags/1.36.10/bootstrap.php#L1779 · [email protected]https://plugins.trac.wordpress.org/browser/woocommerce-eu-vat-compliance/tags/1.36.10/record-order-details.php#L222 · [email protected]https://plugins.trac.wordpress.org/browser/woocommerce-eu-vat-compliance/tags/1.36.10/record-order-details.php#L740 · [email protected]https://plugins.trac.wordpress.org/changeset/3713548/woocommerce-eu-vat-compliance/trunk/record-order-details.php · [email protected]https://plugins.trac.wordpress.org/changeset?reponame&new=3713548%40woocommerce-eu-vat-compliance&old=3676299%40woocommerce-eu-vat-compliance · [email protected]https://www.wordfence.com/threat-intel/vulnerabilities/id/9f17d266-e64f-4721-9c8d-5bc72791ef01?source=cve · [email protected]
EPSS history
Timeline
  • 18 OCT 03:26Z
    EPSS moved — → 0%
    epss
  • 17 OCT 07:51Z
    European VAT Compliance Assistant for WooCommerce <= 1.36.10 - Unauthenticated Stored Cross-Site Scripting via CF-IPCountry Header
    cvelistv5
  • 17 OCT 07:51Z
    European VAT Compliance Assistant for WooCommerce <= 1.36.10 - Unauthenticated Stored Cross-Site Scripting via CF-IPCountry Header
    cvelistv5