CVE-2026-19433: Prospero Flow CRM 0 to before 5.4.8

Affected technology

Prospero Flow CRM · 0 to before 5.4.8
Roskus

Description’s affected range: Through User-Controlled Key in the contact management component in Roskus Prospero Flow CRM before 5.4.8

Component: Contact management
File: app/Repositories/ContactRepository.php, app/Http/Controllers/Contact/ContactExportVCard.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.