CVE-2026-100316
highpriority · track · 29EPSS 0.003 · 19 %ileEPSS · scored 2026-10-27
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.
cvss
Technical severity, 0–10. One row per scoring source.
base score 0–10 · higher = more severe · hover a vector to decode⚠ sources disagree · medium–high · 6.6–7.2
ssvc
A stakeholder decision — act, attend, or track — from exploitation and impact.
weaknesses
The CWE weakness classes this flaw belongs to.
affected products
Products and version ranges known to be affected.
No affected products recorded.
sources
Which sources assert this record, and when.
references (6) nvd
External citations — patches, advisories, analysis.
- https://plugins.trac.wordpress.org/browser/woocommerce-eu-vat-compliance/tags/1.36.10/bootstrap.php#L1779
- https://plugins.trac.wordpress.org/browser/woocommerce-eu-vat-compliance/tags/1.36.10/record-order-details.php#L222
- https://plugins.trac.wordpress.org/browser/woocommerce-eu-vat-compliance/tags/1.36.10/record-order-details.php#L740
- https://plugins.trac.wordpress.org/changeset/3713548/woocommerce-eu-vat-compliance/trunk/record-order-details.php
- https://plugins.trac.wordpress.org/changeset?reponame&new=3713548%40woocommerce-eu-vat-compliance&old=3676299%40woocommerce-eu-vat-compliance
- https://www.wordfence.com/threat-intel/vulnerabilities/id/9f17d266-e64f-4721-9c8d-5bc72791ef01?source=cve
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