CVE-2026-16597
Description
The GTM4WP – A Google Tag Manager (GTM) plugin for WordPress plugin for WordPress is vulnerable to Stored Cross-Site Scripting via WooCommerce Billing Fields in all versions up to, and including, 1.22.3 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. This requires the GTM4WP WooCommerce order data integration option (GTM4WP_OPTION_INTEGRATE_WCORDERDATA) to be enabled, and is exploited by placing a guest checkout order with a JavaScript payload in a WooCommerce billing field such as the billing first name.
AI Insight
LLM-synthesized narrative grounded in this CVE's description and references.
Affected products
1Patches
Vulnerability mechanics
References
7- plugins.trac.wordpress.org/browser/duracelltomi-google-tag-manager/tags/1.22.3/integration/woocommerce.phpnvd
- plugins.trac.wordpress.org/browser/duracelltomi-google-tag-manager/tags/1.22.3/integration/woocommerce.phpnvd
- plugins.trac.wordpress.org/browser/duracelltomi-google-tag-manager/tags/1.22.3/integration/woocommerce.phpnvd
- plugins.trac.wordpress.org/browser/duracelltomi-google-tag-manager/tags/1.22.3/public/frontend.phpnvd
- plugins.trac.wordpress.org/changeset/3618063/duracelltomi-google-tag-manager/trunk/public/frontend.phpnvd
- plugins.trac.wordpress.org/changesetnvd
- www.wordfence.com/threat-intel/vulnerabilities/id/03542812-b6e5-421d-9ba6-43f1c779940fnvd
News mentions
2- Wordfence Intelligence Weekly WordPress Vulnerability Report (August 3, 2026 to August 9, 2026)Wordfence Blog · Aug 14, 2026
- Wordfence Intelligence Weekly WordPress Vulnerability Report (July 27, 2026 to August 2, 2026)Wordfence Blog · Aug 8, 2026