What the vulnerability does
01Description
The YayMail – WooCommerce Email Customizer plugin for WordPress is vulnerable to Stored Cross-Site Scripting via settings in all versions up to, and including, 4.3.2 due to insufficient input sanitization and output escaping. This makes it possible for authenticated attackers, with Shop Manager-level permissions and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page. This only affects multi-site installations and installations where unfiltered_html has been disabled.
Explanation of Vulnerability in Simple Terms
02Summary
YayMail versions up to 4.3.2 contain a stored cross-site scripting (XSS) vulnerability in email customization features. An authenticated admin with high privileges can inject malicious scripts into email templates that execute in the browsers of other users viewing those templates. 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 into email templates that execute when other users view them.
Potential impact on your site
04Site Impact
Admins or staff viewing customized emails could have their sessions compromised or be redirected to malicious sites.
Conditions required to exploit
05Prerequisites
Admin-level access to the plugin settings; high attack complexity suggests specific conditions must be met.
Key dates
06Disclosure timeline
February 18, 2026
CVE published
April 8, 2026
Record updated
