What the vulnerability does
01Description
The Big Post Shipping for WooCommerce plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the plugin's 'wooboigpost_shipping_status' shortcode in all versions up to, and including, 2.1.2 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
Big Post Shipping for WooCommerce versions 2.1.2 and earlier contain a cross-site scripting (XSS) vulnerability. An authenticated user with low privileges can inject malicious scripts that execute in other users' browsers, including administrators. The vulnerability has scope change, meaning the impact extends beyond the vulnerable component itself.
What an attacker can do
03Attacker Capabilities
Inject malicious scripts that run in other users' browsers, potentially stealing session tokens or performing actions as those users.
Potential impact on your site
04Site Impact
Attackers with basic site access can compromise admin accounts or other users' sessions through script injection.
Conditions required to exploit
05Prerequisites
Attacker must have a low-privilege account on the site (e.g., customer or contributor role).
Key dates
06Disclosure timeline
September 30, 2025
CVE published
April 8, 2026
Record updated
