CVE-2026-59237: Prospero Flow CRM 4.6.0 to before 5.5.3

Affected technology

Prospero Flow CRM · 4.6.0 to before 5.5.3
Roskus

Description’s affected range: Through User-Controlled Key (CWE-639) in the Order and OrderItem REST API controllers in Roskus Prospero Flow CRM before 5.5.3

Component: Order and OrderItem REST API
File: app/Http/Controllers/Api/Order/OrderReadController.php, OrderUpdateController.php, OrderItemReadController.php, OrderItemUpdateController.php, OrderItemDeleteController.php

Attack conditions (Source advisory, CVSS 4.0): Network (remote) · No privileges required · No user interaction required

What an attacker can do

A remote, authenticated user can read, modify, and delete orders and order items belonging to any other company (tenant) via a sequential numeric {id} supplied to GET /api/order/{id}, PUT /api/order/{id}, GET /api/order-item/{id}, PUT /api/order-item/{id}, or DELETE /api/order-item/{id}, because the controllers resolve records with Order::find($id) / Item::find($id) without scoping by the authenticated user's company. Source advisory’s CVSS 4.0 assessment (base score 6.9/10) rates confidentiality and integrity impact as low; availability impact as none.