woocommerce-pdf-invoices-packing-slips is an extension which allows users to create, print & automatically email PDF invoices & packing slips for WooCommerce orders. This vulnerability allows unauthorized users to access any PDF document from a store if they: 1. Have access to a guest document link and 2. Replace the URL variable `my-account` with `bulk`. The issue occurs when: 1. The store's document access is set to "guest." and 2. The user is logged out. This vulnerability compromises the confidentiality of sensitive documents, affecting all stores using the plugin with the guest access option enabled. This issue has been addressed in version 4.0.0 and all users are advised to upgrade. There are no known workarounds for this vulnerability.

Missing Authorization vulnerability in Sprout Invoices Client Invoicing by Sprout Invoices allows Exploiting Incorrectly Configured Access Control Security Levels. This issue affects Client Invoicing by Sprout Invoices: from n/a through 20.8.1.

Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in add-ons.org PDF Invoices for WooCommerce + Drag and Drop Template Builder allows Stored XSS. This issue affects PDF Invoices for WooCommerce + Drag and Drop Template Builder: from n/a through 4.6.0.

Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in WebToffee WooCommerce PDF Invoices, Packing Slips, Delivery Notes and Shipping Labels allows Stored XSS. This issue affects WooCommerce PDF Invoices, Packing Slips, Delivery Notes and Shipping Labels: from n/a through 4.7.1.

Missing Authorization vulnerability in Sprout Invoices Client Invoicing by Sprout Invoices.This issue affects Client Invoicing by Sprout Invoices: from n/a through 20.8.0.

The PDF Builder for WooCommerce. Create invoices,packing slips and more plugin for WordPress is vulnerable to Reflected Cross-Site Scripting via the 'page' parameter in all versions up to, and including, 1.2.136 due to insufficient input sanitization and output escaping. This makes it possible for unauthenticated attackers to inject arbitrary web scripts in pages that execute if they can successfully trick a user into performing an action such as clicking on a link.

The PDF Invoices & Packing Slips Generator for WooCommerce plugin for WordPress is vulnerable to Reflected Cross-Site Scripting due to the use of add_query_arg without appropriate escaping on the URL in all versions up to, and including, 2.2.1. This makes it possible for unauthenticated attackers to inject arbitrary web scripts in pages that execute if they can successfully trick a user into performing an action such as clicking on a link.

Missing Authorization vulnerability in WP Overnight WooCommerce PDF Invoices & Packing Slips allows Exploiting Incorrectly Configured Access Control Security Levels.This issue affects WooCommerce PDF Invoices & Packing Slips: from n/a through 3.8.6.

The Freemius SDK, as used by hundreds of WordPress plugin and theme developers, was vulnerable to Cross-Site Request Forgery and Information disclosure due to missing capability checks and nonce protection on the _get_debug_log, _get_db_option, and the _set_db_option functions in versions up to, and including 2.4.2. Any WordPress plugin or theme running a version of Freemius less than 2.4.3 is vulnerable.

Missing Authorization vulnerability in Sliced Invoices.This issue affects Sliced Invoices: from n/a through 3.9.2.