CVE-2026-1906

Summary

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.

Affected Software

Weaknesses

• CWE-862: CWE-862 Missing Authorization

ADP Enrichment

CISA ADP Vulnrichment

• SSVC:
• Exploitation: none
  • Automatable: no
  • Technical Impact: partial

References

• https://www.wordfence.com/threat-intel/vulnerabilities/id/2e1922c6-e63b-47aa-97de-1e2382fa25d3?source=cve
• https://plugins.trac.wordpress.org/browser/woocommerce-pdf-invoices-packing-slips/tags/5.6.0/includes/Admin.php#L895
• https://plugins.trac.wordpress.org/browser/woocommerce-pdf-invoices-packing-slips/tags/5.6.0/includes/Admin.php#L72
• https://wordpress.org/plugins/woocommerce-pdf-invoices-packing-slips/#developers

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