WordPress security changelog
MEDIUM CVE-2026-9612 Deferred

WhatsOrder – Instant Checkout for WooCommerce: Sensitive information exposure

WhatsOrder – Instant Checkout for WooCommerce is affected by sensitive information exposure. The vulnerable path is reachable without authentication. Successful exploitation can disclose data that should not be available to the caller. The published affected range is <= 1.0.1.

CVE / CNA score 5.3 CVSS 3.1 · security@wordfence.com
NVD score Pending NVD has not published its own CVSS assessment.
Component
WhatsOrder – Instant Checkout for WooCommerce
Plugin slug
whatsorder-instant-checkout-for-woocommerce
Affected
<= 1.0.1
Safe version
> 1.0.1
Published
Jun 24, 2026
Weakness
CWE-200 — Exposure of Sensitive Information to an Unauthorized Actor

This CVE was published Jun 24, 2026 and is one of 1 known issue for this plugin.

What to do

Update, patch or deactivate.

Update WhatsOrder – Instant Checkout for WooCommerce to a release after 1.0.1, or disable and remove it until a fixed version is available.

A safe version is available, so updating to that version or later is the preferred remediation. If an immediate update is not practical, consider a targeted application patch or temporarily restricting the affected functionality.

Deactivate only when warranted by your risk profile, or when advised by your hosting provider in the limited circumstances where the vulnerability cannot otherwise be mitigated. If you’re unsure which action is appropriate, contact Fused or your hosting provider for guidance.

Source record

Technical description

The WhatsOrder – Instant Checkout for WooCommerce plugin for WordPress is vulnerable to Sensitive Information Exposure in all versions up to, and including, 1.0.1 via the yapacdev_generate_order_pdf. This makes it possible for unauthenticated attackers to extract sensitive customer PII and order details — including full name, email address, phone number, billing address, ordered items with quantities and prices, applied coupons, shipping method, and order total — from any customer's invoice by enumerating sequential order IDs. Invoice HTML files are written to the publicly accessible wp-content/uploads/whatsorder_invoices/ directory, which is created without an .htaccess deny rule or index.php guard, making every invoice directly downloadable over HTTP with no authentication check.

CVE / CNA vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N

References

Primary and upstream sources