CVE-2026-92244

PDF Invoices & Packing Slips for WooCommerce <= 5.16.1 - Unauthenticated Stored Cross-Site Scripting via Billing First Name / Last Name / Company Fields

2026-09-30 20:22
Kuba

Strategic Overview

Status
Patched in 5.16.2
Affected Plugin
PDF Invoices & Packing Slips for WooCommerce
Affected Version
<= 5.16.1
CVSS
7.2High
Weakness type
CWE-79 · Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
CVE
CVE-2026-92244
View all PDF Invoices & Packing Slips for WooCommerce vulnerabilities

At a glance

CVE-2026-92244 is a high-severity Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in the PDF Invoices & Packing Slips for WooCommerce WordPress plugin, affecting versions <= 5.16.1. It carries a CVSS score of 7.2 (reachable over the network; low attack complexity). Exploitation requires no authentication. The issue is fixed in version 5.16.2; sites on affected versions should update now. Disclosed September 2026, reported by Kuba.

Vulnerability Overview

The PDF Invoices & Packing Slips for WooCommerce plugin for WordPress is vulnerable to Stored Cross-Site Scripting via Billing First Name / Last Name / Company Fields in all versions up to, and including, 5.16.1 due to insufficient input sanitization and output escaping. This makes it possible for unauthenticated attackers to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page. The payload survives initial storage because WooCommerce's sanitize_text_field() and wc_clean() do not strip entity-encoded strings containing no literal '<' character, allowing unauthenticated guest-checkout orders to plant the malicious content.

Technical Analysis

The vector marks this flaw as remotely reachable over the network, with low attack complexity — no special timing or configuration is needed, and no privileges on the target site, and no interaction from a victim user.

CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

PDF Invoices & Packing Slips for WooCommerce <= 5.16.1 carries this weakness at sanitize_text_field(), and reaching it takes no account at all. Cross-site scripting happens when input from a request is written into a page without being escaped for the context it lands in, so the browser parses attacker-supplied text as markup or script.

Injected script runs with the privileges of whoever views the affected page, which is how these flaws turn into administrator session theft, silent account creation or persistent backdoors in page content. For PDF Invoices & Packing Slips for WooCommerce the fix is 5.16.2: builds <= 5.16.1 are affected, anything from 5.16.2 onward is not.

Remediation

Update to version 5.16.2, or a newer patched version

How does WordSec protect against this?

Requests carrying this pattern arrive without a session, so nothing upstream of the firewall gets a chance to reject them: WordSec's web application firewall inspects request payloads before WordPress loads them. None of that substitutes for the fix: PDF Invoices & Packing Slips for WooCommerce 5.16.2 closes this, and updating the plugin is the step that ends it.

  • Firewall
  • Login Security
  • Alerts

External References

https://www.cve.org/CVERecord?id=CVE-2026-92244https://www.wordfence.com/threat-intel/vulnerabilities/id/2ec3bd67-6e4b-46b6-8027-feeea149f3a4https://nvd.nist.gov/vuln/detail/CVE-2026-92244

Related records

Vulnerability data © Defiant, Inc., provided under the Wordfence Intelligence T&C