CVE-2026-19539: Prospero Flow CRM 0 to before 5.4.9

Affected technology

Prospero Flow CRM · 0 to before 5.4.9
Roskus

Description’s affected range: Through User-Controlled Key in the ticket management component in Roskus Prospero Flow CRM before 5.4.9

Component: Ticket management
File: app/Http/Controllers/Ticket/TicketUpdateController.php, app/Repositories/TicketRepository.php, app/Http/Controllers/Ticket/TicketDeleteController.php

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

What an attacker can do

Source advisory’s CVSS 4.0 assessment (base score 8.6/10) rates confidentiality and integrity impact as high; availability impact as none. The description does not specify what an attacker can achieve beyond these rated impacts.