CVE-2026-1906Public exploitNetwork attack vector

Subscriber-level Peppol identifier tampering via arbitrary order ID

Published Feb 18, 2026 · Updated Feb 18, 2026

IDOR in WP Overnight PDF Invoices & Packing Slips for WooCommerce 5.6.0 and earlier allows remote authenticated users to alter Peppol identifiers. The wpo_ips_edi_save_order_customer_peppol_identifiers AJAX handler accepts an attacker-controlled order_id and writes peppol_endpoint_id and peppol_endpoint_eas values without checking capabilities or order ownership. Subscriber-level access and a Peppol-enabled invoicing flow are required; altered routing identifiers can misdirect electronic invoices, disrupt payments, and expose invoice data.

CVSS severity4.3
Medium
EPSS probability0.26%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

IDOR in WP Overnight PDF Invoices & Packing Slips for WooCommerce 5.6.0 and earlier allows remote authenticated users to alter Peppol identifiers. The wpo_ips_edi_save_order_customer_peppol_identifiers AJAX handler accepts an attacker-controlled order_id and writes peppol_endpoint_id and peppol_endpoint_eas values without checking capabilities or order ownership. Subscriber-level access and a Peppol-enabled invoicing flow are required; altered routing identifiers can misdirect electronic invoices, disrupt payments, and expose invoice data.

The record

CVE
CVE-2026-1906
Published
Feb 18, 2026
Updated
Feb 18, 2026
Vendor
WP Overnight
Product
PDF Invoices & Packing Slips for WooCommerce
Classifications
CWE-862, T1565.001
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Feb 18, 2026CVE publishedPublication date reported by the CVE source.
  2. Feb 18, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=* <=5.6.0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

WP Overnight · PDF Invoices & Packing Slips for WooCommerceversion=* <=5.6.0

Published CVSS scores

4.3WordfenceCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-862Missing Authorization
T1565.001Stored Data Manipulation

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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