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Vulnerability · Published Jul 29, 2026 · Assigned by Wordfence

CVE-2026-16597GTM4WP <= 1.22.3 - Unauthenticated Stored Cross-Site Scripting via WooCommerce Billing Fields

High 7.2

In plain English

A high-severity cross-site scripting in GTM4WP – A Google Tag Manager (GTM) plugin for WordPress from duracelltomi. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.4% (higher than 36% of all known vulnerabilities).

Severity (CVSS 3.1)7.2High
Exploit odds (30 days)0.4%top 63.6% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known

Official 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.

Affected products (as reported)

VendorProductVersions
duracelltomi GTM4WP – A Google Tag Manager (GTM) plugin for WordPress 0 – through 1.22.3

Weakness: CWE-79 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N

References