---
id: "CVE-2026-111578"
kind: "vulnerability"
aliases: ["CVE-2026-111578"]
title: "WordPress PDF Invoices plugin: guest order fields enable stored cross-site scripting"
severity: "high"
cvss: 7.5
epss: null
exploited: false
status: "open"
category: "package"
products: []
ecosystems: []
tags: ["package", "pdf-invoices-packing-slips", "woocommerce", "wordpress"]
not_affected_if: ["plugin-not-installed", "plugin-version-5.16.5-or-later"]
published_at: "2026-10-30T22:16:53+00:00"
first_seen_at: "2026-10-30T22:25:56+00:00"
updated_at: "2026-10-30T22:27:06+00:00"
sources: [{"source": "nvd", "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-111578", "first_seen_at": "2026-10-30T22:25:56+00:00"}]
---

# WordPress PDF Invoices plugin: guest order fields enable stored cross-site scripting

The PDF Invoices & Packing Slips for WooCommerce WordPress plugin does not escape customer billing, shipping and order-note fields in generated invoices and packing slips. A guest who places an order can store a script that runs in the browser of a shop administrator who opens the document.

_Summary, check and fix written by a model from the sources; labelled as such._

## How to check

- Check the installed version of the plugin in the WordPress admin under Plugins, or in `wp-content/plugins/` for the PDF Invoices & Packing Slips for WooCommerce plugin.
- Confirm whether the installed version is at or above `5.16.5`.

## Fix

- PDF Invoices & Packing Slips for WooCommerce: `5.16.5`

## Timeline

- 2026-10-30T22:25:56+00:00 nvd https://nvd.nist.gov/vuln/detail/CVE-2026-111578

## From the sources

The PDF Invoices & Packing Slips for WooCommerce WordPress plugin from 5.16.2 before 5.16.5 does not properly escape several customer-supplied order fields — including the billing and shipping address values and the customer order note — before they are output in generated invoice and packing-slip documents, allowing unauthenticated users placing guest orders to store a malicious script that executes when a shop administrator views the document, leading to Stored Cross-Site Scripting.

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