WooCommerce Fundiin cho WooCommerce Plugin up to 3.4.0 on WordPress REST API Routes/Checkout authorization

Summaryinfo

A vulnerability, which was classified as critical, has been found in WooCommerce Fundiin cho WooCommerce Plugin up to 3.4.0. This affects an unknown function of the component REST API Routes/Checkout. The manipulation leads to authorization. This vulnerability is documented as CVE-2026-81649. The attack can be initiated remotely. There is not any exploit available.

Detailsinfo

A vulnerability was found in WooCommerce Fundiin cho WooCommerce Plugin up to 3.4.0. It has been rated as critical. This issue affects an unknown functionality of the component REST API Routes/Checkout. The manipulation with an unknown input leads to a authorization vulnerability. Using CWE to declare the problem leads to CWE-863. The product performs an authorization check when an actor attempts to access a resource or perform an action, but it does not correctly perform the check. This allows attackers to bypass intended access restrictions. Impacted is confidentiality, integrity, and availability. The summary by CVE is:

The Fundiin cho WooCommerce WordPress plugin through 3.4.0 does not have proper authorisation on several of its REST API routes, relying instead on a credential that is identical on every installation, allowing unauthenticated attackers to disclose the store's payment credentials and customer order data, overwrite the payment gateway configuration so that payments are credited elsewhere, and mark unpaid orders as paid. The same missing authorisation also allows arbitrary script to be stored in a field which is output unescaped on the classic checkout, leading to unauthenticated stored XSS on stores that do not use the block-based checkout.

The advisory is shared at wpscan.com. The identification of this vulnerability is CVE-2026-81649 since 08/27/2026. The exploitation is known to be easy. The attack may be initiated remotely. No form of authentication is needed for a successful exploitation. Neither technical details nor an exploit are publicly available. The price for an exploit might be around USD $0-$5k at the moment (estimation calculated on 10/11/2026).

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

The vulnerability is also documented in the vulnerability database at EUVD (EUVD-2026-96752). If you want to get the best quality for vulnerability data then you always have to consider VulDB.

Productinfo

Type

• WordPress Plugin

Vendor

• WooCommerce

Name

• Fundiin cho WooCommerce Plugin

Version

• 3.0
• 3.1
• 3.2
• 3.3
• 3.4.0

CPE 2.3info

• 🔒
• 🔒
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CPE 2.2info

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Entryinfo

If you want to get the best quality for vulnerability data then you always have to consider VulDB.

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