What the vulnerability does
01Description
The QR Code for WooCommerce order emails, PDF invoices, packing slips plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the plugin's shortcode in all versions up to, and including, 1.9.42 due to insufficient input sanitization and output escaping on user supplied attributes. This makes it possible for authenticated attackers, with contributor-level access and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page.
Explanation of Vulnerability in Simple Terms
02Summary
The QR Code for WooCommerce plugin versions up to 1.9.42 contain a stored cross-site scripting (XSS) vulnerability. An authenticated user with low privileges can inject malicious scripts that execute in the browsers of other users viewing order emails, PDF invoices, or packing slips. The vulnerability affects the entire site scope due to how the plugin processes and displays user-controlled data without proper sanitization.
What an attacker can do
03Attacker Capabilities
Inject malicious scripts that run in other users' browsers when they view order-related documents.
Potential impact on your site
04Site Impact
Customers and staff viewing orders may have sessions hijacked, credentials stolen, or be redirected to malicious sites.
Conditions required to exploit
05Prerequisites
Attacker must have a low-privilege account (e.g., customer or shop manager) on the WooCommerce site.
Key dates
06Disclosure timeline
January 7, 2026
CVE published
April 8, 2026
Record updated
