yapacdev WhatsOrder Plugin up to 1.0.1 on WordPress HTML File whatsorder_invoices information disclosure

Summaryinfo

A vulnerability classified as problematic has been found in yapacdev WhatsOrder Plugin up to 1.0.1 on WordPress. This affects an unknown part of the file /uploads/whatsorder_invoices of the component HTML File Handler. Performing a manipulation results in information disclosure. This vulnerability is known as CVE-2026-9612. Remote exploitation of the attack is possible. No exploit is available. It is recommended to upgrade the affected component.

Detailsinfo

A vulnerability was found in yapacdev WhatsOrder Plugin up to 1.0.1 on WordPress. It has been classified as problematic. This affects some unknown processing of the file /uploads/whatsorder_invoices of the component HTML File Handler. The manipulation with an unknown input leads to a information disclosure vulnerability. CWE is classifying the issue as CWE-200. The product exposes sensitive information to an actor that is not explicitly authorized to have access to that information. This is going to have an impact on confidentiality. The summary by CVE is:

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.

The weakness was published by Benedictus Jovan. It is possible to read the advisory at wordfence.com. This vulnerability is uniquely identified as CVE-2026-9612 since 05/26/2026. The exploitability is told to be easy. It is possible to initiate the attack remotely. No form of authentication is needed for exploitation. It demands that the victim is doing some kind of user interaction. Technical details of the vulnerability are known, but there is no available exploit. The attack technique deployed by this issue is T1592 according to MITRE ATT&CK.

Upgrading to version 1.0.0 eliminates this vulnerability.

Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

Productinfo

Type

• WordPress Plugin

Vendor

• yapacdev

Name

• WhatsOrder Plugin

Version

• 1.0.0
• 1.0.1

CPE 2.3info

• 🔒
• 🔒

CPE 2.2info

• 🔒
• 🔒

CVSSv4info

CVSSv3info

CVSSv2info

Exploitinginfo

Threat Intelligenceinfo

Countermeasuresinfo

Timelineinfo

Sourcesinfo

Entryinfo

Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

Discussion