CVE-2026-1906

PDF Invoices & Packing Slips for WooCommerce <= 5.6.0 - Missing Authorization to Authenticated (Subscriber+) Peppol Identifier Modification

2026-02-17 17:18
Dmitrii Ignatyev

Strategic Overview

Status
Patched in 5.7.0
Affected Plugin
PDF Invoices & Packing Slips for WooCommerce
Affected Version
<= 5.6.0
CVSS
4.3Medium
Weakness type
CWE-862 · Missing Authorization
CVE
CVE-2026-1906
View all PDF Invoices & Packing Slips for WooCommerce vulnerabilities

At a glance

CVE-2026-1906 is a medium-severity Missing Authorization vulnerability in the PDF Invoices & Packing Slips for WooCommerce WordPress plugin, affecting versions <= 5.6.0. It carries a CVSS score of 4.3 (reachable over the network; low attack complexity). Exploitation requires an authenticated account at Subscriber level or above. The issue is fixed in version 5.7.0; sites on affected versions should update now. Disclosed February 2026, reported by Dmitrii Ignatyev.

Vulnerability Overview

The PDF Invoices & Packing Slips for WooCommerce plugin for WordPress is vulnerable to Insecure Direct Object Reference in all versions up to, and including, 5.6.0 via the `wpo_ips_edi_save_order_customer_peppol_identifiers` AJAX action due to missing capability checks and order ownership validation. This makes it possible for authenticated attackers, with Subscriber-level access and above, to modify Peppol/EDI endpoint identifiers (`peppol_endpoint_id`, `peppol_endpoint_eas`) for any customer by specifying an arbitrary `order_id` parameter on systems using Peppol invoicing. This can affect order routing on the Peppol network and may result in payment disruptions and data leakage.

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 interaction from a victim user.

CWE-862: Missing Authorization

Reaching this weakness in PDF Invoices & Packing Slips for WooCommerce <= 5.6.0 takes an account at Subscriber level or above. A missing authorization check means a function is reachable by anyone who can reach the endpoint, because the code never asks whether the caller is allowed to perform the action.

Any user who can reach the endpoint gets to run an action reserved for higher-privileged roles, from reading protected data to changing settings or content. For PDF Invoices & Packing Slips for WooCommerce the fix is 5.7.0: builds <= 5.6.0 are affected, anything from 5.7.0 onward is not.

Remediation

Update to version 5.7.0, or a newer patched version

How does WordSec protect against this?

Because it turns on account access, WordSec's login security is the relevant layer: role-based two-factor, captcha and brute-force limits raise the cost of getting the account this needs. None of that substitutes for the fix: PDF Invoices & Packing Slips for WooCommerce 5.7.0 closes this, and updating the plugin is the step that ends it.

  • Login Security
  • Alerts

External References

https://www.cve.org/CVERecord?id=CVE-2026-1906https://www.wordfence.com/threat-intel/vulnerabilities/id/2e1922c6-e63b-47aa-97de-1e2382fa25d3https://nvd.nist.gov/vuln/detail/CVE-2026-1906

Related records

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