---
title: "CVE-2026-111578: WooCommerce PDF Invoices & Packing Slips - Stored Cross-Site Scripting"
description: "WooCommerce PDF Invoices & Packing Slips plugin > 5.16.2 and < 5.16.5 contains a stored cross-site scripting caused by improper escaping of customer-supplied order fields in invoice and packing-slip documents, letting unauthenticated guest users store malicious scripts executed by shop administrators, exploit requires placing guest orders."
url: https://panop.io/threat-heartbeat/CVE-2026-111578/
---

# CVE-2026-111578 WooCommerce PDF Invoices & Packing Slips - Stored Cross-Site Scripting

WooCommerce PDF Invoices & Packing Slips plugin > 5.16.2 and < 5.16.5 contains a stored cross-site scripting caused by improper escaping of customer-supplied order fields in invoice and packing-slip documents, letting unauthenticated guest users store malicious scripts executed by shop administrators, exploit requires placing guest orders.

CVSS base score 7.5 /10

High

CISA KEV

Not listed

Public exploit

None known

Authentication

Not required

EPSS

0.30% chance of exploitation in 30 days

[View the NVD record ↗](https://nvd.nist.gov/vuln/detail/CVE-2026-111578)

## Details

Type

Stored Cross-Site Scripting

Impact

Stored XSS

CVSS vector

CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H

Published

30 October 2026

Updated

1 November 2026

Weakness

[CWE-79](https://cwe.mitre.org/data/definitions/79.html)

## Vendor fix

Update to version 5.16.5 or later.

Patching closes this CVE. It does not tell you which of your systems run the affected version, or what else is exposed alongside them.

## References

- [https://nvd.nist.gov/vuln/detail/CVE-2026-111578](https://nvd.nist.gov/vuln/detail/CVE-2026-111578)
- [https://wpscan.com/vulnerability/ac5d0074-295d-46ee-b2ad-8bfd3ef9917b/](https://wpscan.com/vulnerability/ac5d0074-295d-46ee-b2ad-8bfd3ef9917b/)

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## What this record can't tell you

- Whether you run the affected software, and where
- Whether an attacker can actually reach and exploit it
- The misconfigurations that never get a CVE number
- What it would cost the business, ranked into what to fix first

Panop answers these inside your environment, for this CVE and every other finding.

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