CVE-2026-16597

HIGH 7.2

GTM4WP <= 1.22.3 - Unauthenticated Stored Cross-Site Scripting via WooCommerce Billing Fields

CVSS Score

7.2

EPSS Score

0.0%

EPSS Percentile

0th

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.

CWE	CWE-79
Vendor	duracelltomi
Product	gtm4wp – a google tag manager (gtm) plugin for wordpress
Published	Jul 29, 2026

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CVSS v3 Breakdown

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N

Attack Vector

Attack Complexity

Privileges Required

User Interaction

Scope

Confidentiality

Integrity

Availability

Affected Versions

duracelltomi / GTM4WP – A Google Tag Manager (GTM) plugin for WordPress

0 ≤ 1.22.3

References

NVD ↗ CVE.org ↗ EPSS Data ↗

Credits

lhking