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

7.5HIGH

Key Information:

Vendor

WordPress
Status
PDF Invoices & Packing Slips For WooCommerce
Vendor
CVE Published:
30 October 2026

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2026-111578?

The WooCommerce PDF Invoices & Packing Slips plugin, versions 5.16.2 through 5.16.4, fails to properly escape user-supplied order fields such as billing and shipping addresses, as well as customer order notes. This oversight allows unauthenticated users to inject malicious scripts when placing guest orders. Consequently, when shop administrators view the generated invoice or packing-slip documents, these scripts execute, undermining the security of the site and potentially compromising sensitive information.

Affected Version(s)

PDF Invoices & Packing Slips for WooCommerce 5.16.2 < 5.16.5

Exploit Proof of Concept (PoC)

PoC code is written by security researchers to demonstrate the vulnerability can be exploited. PoC code is also a key component for weaponization which could lead to ransomware.

CVE-2026-111578 - Proof of Concept

References

https://wpscan.com/vulnerability/ac5d0074-295d-46ee-b2ad-...
exploitvdb-entrytechnical-description

CVSS V3.1

Score:
7.5
Severity:
HIGH
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Network
Attack Complexity:
High
Privileges Required:
None
User Interaction:
Required
Scope:
Unchanged

Timeline

  • 🟡

    Public PoC available

  • 👾

    Exploit known to exist

  • Vulnerability published

  • Vulnerability Reserved

Credit

Karthik Ramakrishnan
WPScan
.