What the vulnerability does
01Description
The Email Customizer for WooCommerce plugin for WordPress is vulnerable to Stored Cross-Site Scripting via email template content in all versions up to, and including, 2.6.7 due to insufficient input sanitization and output escaping. This makes it possible for authenticated attackers, with administrator-level access, to inject arbitrary web scripts in email templates that will execute when customers view transactional emails. This only affects multi-site installations and installations where unfiltered_html has been disabled.
Explanation of Vulnerability in Simple Terms
02Summary
The Email Customizer for WooCommerce plugin contains a stored cross-site scripting (XSS) vulnerability in versions up to 2.6.7. An attacker with high-level privileges can inject malicious scripts into email templates that execute in the browsers of other site administrators. The vulnerability requires high attack complexity and does not require user interaction from the victim.
What an attacker can do
03Attacker Capabilities
Inject malicious scripts that run in other administrators' browsers when they view email templates.
Potential impact on your site
04Site Impact
A malicious admin or compromised high-privilege account can steal session tokens or perform actions as other administrators viewing the plugin's email template pages.
Conditions required to exploit
05Prerequisites
Attacker must have high-level site privileges (e.g., admin or editor role). No user interaction required from the victim.
Key dates
06Disclosure timeline
January 7, 2026
CVE published
April 8, 2026
Record updated
