Vulnerability · Published Oct 2, 2026 · Assigned by Wordfence
CVE-2026-94432Appointment Booking Plugin <= 5.7.1 - Insecure Direct Object Reference to Unauthenticated Unauthorized Transaction Intent Creation/Modification and Invoice Enumeration via 'invoice_id' Parameter
Medium 5.3
In plain English
A medium-severity authorization bypass via user-controlled key in Appointment Booking Plugin – LatePoint | Calendar & Scheduling for WordPress from latepoint. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.3% (higher than 19% of all known vulnerabilities).
Official description
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.
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| latepoint | Appointment Booking Plugin – LatePoint | Calendar & Scheduling for WordPress | 0 – through 5.7.1 |
Weakness: CWE-639 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
References
- https://www.wordfence.com/threat-intel/vulnerabilities/id/e101bc4e-1c5d-4f30-a1eb-617b0db92723?source=cve
- https://plugins.trac.wordpress.org/browser/latepoint/tags/5.7.0/lib/controllers/paypal_connect_controller.php#L31
- https://plugins.trac.wordpress.org/browser/latepoint/tags/5.7.0/lib/controllers/paypal_connect_controller.php#L20
- https://plugins.trac.wordpress.org/browser/latepoint/tags/5.7.0/lib/helpers/transaction_intent_helper.php#L85
- https://plugins.trac.wordpress.org/browser/latepoint/tags/5.7.0/latepoint.php#L1072
- https://plugins.trac.wordpress.org/browser/latepoint/tags/5.7.0/lib/controllers/controller.php#L57
- https://plugins.trac.wordpress.org/changeset?reponame=&old=3709058%40latepoint&new=3709058%40latepoint