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Vulnerabilities

Vulnerability · CVE-2026-100316

European VAT Compliance Assistant for WooCommerce <= 1.36.10 - Unauthenticated Stored Cross-Site Scripting via CF-IPCountry Header

Published Oct 16, 2026 · catalog updated Oct 18, 2026 · European VAT Compliance Assistant for WooCommerce

Check if you run it

No confirmed exploitation is on record for CVE-2026-100316. EPSS is 0.27%. Act only if a listed version of European VAT Compliance Assistant for WooCommerce is installed.

Gaps on this record

  • No vendor fix or required action is stored. Compare the linked advisory before you change production.
Severity
High7.2
Known exploitation
Not in CISA/VulnCheck KEV
EPSS
0.27%
Remediation
Version ranges on file
Affected products
stated European VAT Compliance Assistant for WooCommerce · vendor davidanderson European VAT Compliance Assistant for WooCommerce · wordpress woocommerce-eu-vat-compliance

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.

Are you affected?

Enter the version you run. The result uses only the ranges stored on this record.

The check returns affected, not affected, or incomplete. It does not guess a version that is missing from the record.

  • stated European VAT Compliance Assistant for WooCommerce<= 1.36.10
  • vendor davidanderson European VAT Compliance Assistant for WooCommerceversion unspecified
  • wordpress woocommerce-eu-vat-complianceversion unspecified

How to fix CVE-2026-100316

What to do

Three questions, each answered from this record only. Confirm the vendor advisory before you patch.

Should you patch?

No confirmed exploitation is on record for CVE-2026-100316. EPSS is 0.27%. Act only if a listed version of European VAT Compliance Assistant for WooCommerce is installed.

Which versions are affected?

Compare what you have installed with European VAT Compliance Assistant for WooCommerce <= 1.36.10. Compare the installed version with the linked vendor advisory before you change production.

What should an analyst verify?

CWE-79: Cross-site Scripting (XSS). EPSS 0.27%. There is no CISA KEV listing. No Exploit-DB or Metasploit reference is linked. Use the source links for the original advisory.

Technology hubs

WordPress security

Code

The project this record applies to. Exploit listings stay in References.

Timeline

Detection, updates, and resolution for this record.

  1. Oct 16, 2026 · Wordfence Intelligence

    Detected

    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 p

  2. Oct 17, 2026 · CVE.org

    Updated

    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 p

  3. Oct 18, 2026 · NIST NVD

    Updated

    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 p

Sources

  • CVE.orgVulnerability recordCVE-2026-100316

    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 una

    cve.org
  • FIRST EPSSExploitation probabilityCVE-2026-100316

    30-day exploitation probability 0.3%

    first.org
  • NIST NVDVulnerability recordCVE-2026-100316

    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 una

    nvd.nist.gov
  • Wordfence IntelligencePackage advisoryCVE-2026-100316

    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 una

    wordfence.com

References

Freshness

Last verified in this catalog Oct 18, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.