CVE-2026-11496

Woo PDF Invoice Builder <= 2.0.8 - Authenticated (Subscriber+) Insecure Direct Object Reference to Sensitive Order Information Disclosure

2026-09-10 14:38
Jaskaranjeet Singh

Strategic Overview

Status
Patched in 2.0.9
Affected Plugin
PDF Builder for WooCommerce. Create invoices,packing slips and more
Affected Version
<= 2.0.8
CVSS
6.5Medium
Weakness type
CWE-862 · Missing Authorization
CVE
CVE-2026-11496
View all PDF Builder for WooCommerce. Create invoices,packing slips and more vulnerabilities

At a glance

CVE-2026-11496 is a medium-severity Missing Authorization vulnerability in the PDF Builder for WooCommerce. Create invoices,packing slips and more WordPress plugin, affecting versions <= 2.0.8. It carries a CVSS score of 6.5 (reachable over the network; low attack complexity; high confidentiality impact). Exploitation requires an authenticated account at Subscriber level or above. The issue is fixed in version 2.0.9; sites on affected versions should update now. Disclosed September 2026, reported by Jaskaranjeet Singh.

Vulnerability Overview

The Woo PDF Invoice Builder plugin (also distributed as "PDF Builder for WooCommerce") for WordPress is vulnerable to Insecure Direct Object Reference in all versions up to, and including, 2.0.8. This is due to the InspectOrder() AJAX handler (woocommerce-pdf-invoice-ajax.php:513), registered on wp_ajax_rednao_wcpdfinv_inspect_order, performing no capability check and no nonce verification before loading an arbitrary order by the attacker-supplied 'OrderNumber' POST field and serializing its full WC_Order::get_data() and meta to the response. This makes it possible for authenticated attackers with Subscriber-level access and above to read every WooCommerce order on the site — including billing/shipping address, email, phone number, payment method, gateway transaction ID, and order totals — by iterating order IDs.

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. A successful exploit has high impact on confidentiality.

CWE-862: Missing Authorization

PDF Builder for WooCommerce. Create invoices,packing slips and more <= 2.0.8 carries this weakness at OrderNumber, and reaching it 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 Builder for WooCommerce. Create invoices,packing slips and more the fix is 2.0.9: builds <= 2.0.8 are affected, anything from 2.0.9 onward is not.

Remediation

Update to version 2.0.9, 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 Builder for WooCommerce. Create invoices,packing slips and more 2.0.9 closes this, and updating the plugin is the step that ends it.

  • Login Security
  • Alerts

External References

https://www.cve.org/CVERecord?id=CVE-2026-11496https://www.wordfence.com/threat-intel/vulnerabilities/id/5e3e7c1a-a9c0-4e92-868c-5785d891cf8fhttps://nvd.nist.gov/vuln/detail/CVE-2026-11496

Related records

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