Vulnerability Description
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.
CVSS Score
MEDIUM
Related Weaknesses (CWE)
References
- https://plugins.trac.wordpress.org/browser/woocommerce-pdf-invoices-packing-slip
- https://plugins.trac.wordpress.org/browser/woocommerce-pdf-invoices-packing-slip
- https://wordpress.org/plugins/woocommerce-pdf-invoices-packing-slips/#developers
- https://www.wordfence.com/threat-intel/vulnerabilities/id/2e1922c6-e63b-47aa-97d
FAQ
What is CVE-2026-1906?
CVE-2026-1906 is a vulnerability with a CVSS score of 4.3 (MEDIUM). 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_cust...
How severe is CVE-2026-1906?
CVE-2026-1906 has been rated MEDIUM with a CVSS base score of 4.3/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2026-1906?
Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.