Authorization Bypass Through User-Controlled Key in the supplier API in Roskus Prospero Flow CRM 4.0.0 through 5.3.1 allows any authenticated user to read and modify another company's supplier record, and to reassign it to their own company, via a PUT request to /api/supplier/{id} setting company_id in the body.
Attack Parameters
Attack Vector
Network
Can be exploited remotely
Attack Complexity
Low
Easy to exploit
Attack Requirements
None
No additional conditions
Privileges Required
None
No privileges needed
User Interaction
None
No user interaction needed
Impact Assessment
Confidentiality
High
Complete data leak
Integrity
High
Complete data modification
Availability
None
No disruption
CVSS Vector v4.0
Weakness Type (CWE)
References 3
https://github.com/Roskus/prospero-flow-crm/commit/4a52477e6ed66afa436814c80e7b…
4daa8cea-433a-44bd-9456-53b127fc289a
https://github.com/Roskus/prospero-flow-crm/releases/tag/v5.5.3
4daa8cea-433a-44bd-9456-53b127fc289a
https://secur0.com/en/cna/cve-list/cve-2026-78365-idor-supplier-api-cross-tenan…
4daa8cea-433a-44bd-9456-53b127fc289a