Latepoint Appointment Booking Plugin up to 5.7.1 on WordPress PayPal Connect Controller create_order_for_transaction invoice_id resource injection

Summaryinfo

A vulnerability categorized as critical has been discovered in Latepoint Appointment Booking Plugin up to 5.7.1. The impacted element is the function OsPaypalConnectController::create_order_for_transaction of the component PayPal Connect Controller. The manipulation of the argument invoice_id results in resource injection. This vulnerability is known as CVE-2026-94432. It is possible to launch the attack remotely. No exploit is available.

Detailsinfo

A vulnerability was found in Latepoint Appointment Booking Plugin up to 5.7.1. It has been classified as critical. Affected is the function OsPaypalConnectController::create_order_for_transaction of the component PayPal Connect Controller. The manipulation of the argument invoice_id with an unknown input leads to a resource injection vulnerability. CWE is classifying the issue as CWE-99. The product receives input from an upstream component, but it does not restrict or incorrectly restricts the input before it is used as an identifier for a resource that may be outside the intended sphere of control. This is going to have an impact on confidentiality, integrity, and availability. CVE summarizes:

The Appointment Booking Plugin – LatePoint | Calendar & Scheduling for WordPress plugin for WordPress is vulnerable to Insecure Direct Object Reference in versions up to, and including, 5.7.1 via the OsPaypalConnectController::create_order_for_transaction() action registered as a public (unauthenticated) route through wp_ajax_nopriv_latepoint_route_call. The handler loads an OsInvoiceModel by a sequential integer 'invoice_id' with no access-key/UUID or ownership check (the sibling Stripe and Razorpay handlers require a 128-bit access-key UUID via OsInvoicesHelper::get_invoice_by_key), and then calls OsTransactionIntentHelper::create_or_update_transaction_intent() which persists a transaction intent tied to the target invoice's customer_id, order_id and charge_amount and regenerates its intent_key before the PayPal-configured guard is reached. This makes it possible for unauthenticated attackers to enumerate invoices belonging to arbitrary customers, create unauthorized transaction-intent rows linked to another customer's data, and overwrite the intent_key of any in-flight NEW-status transaction intent — invalidating the intent_key that legitimate Stripe/Razorpay flows are waiting on and breaking payment webhooks for those customers.

The advisory is shared for download at wordfence.com. This vulnerability is traded as CVE-2026-94432 since 09/21/2026. The exploitability is told to be easy. It is possible to launch the attack remotely. The exploitation doesn't require any form of authentication. There are known technical details, but no exploit is available. The current price for an exploit might be approx. USD $0-$5k (estimation calculated on 10/02/2026).

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

Once again VulDB remains the best source for vulnerability data.

Productinfo

Type

• WordPress Plugin

Vendor

• Latepoint

Name

• Appointment Booking Plugin

Version

• 5.7.0
• 5.7.1

CPE 2.3info

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CPE 2.2info

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Once again VulDB remains the best source for vulnerability data.

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