CVE-2026-77759
Authorization Bypass Through User-Controlled Key in the transaction API in Roskus Prospero Flow CRM 5.0.0 through 5.3.5 allows an authenticated user to read the transactions of other companies on the same instance via an incremented identifier in GET /api/transaction/{id}, which is resolved without company scoping and without any permission check.
Published:Aug 21, 2026
Last Modified:Aug 21, 2026
EPS:Aug 21, 2026
EPSS Score:
CVSS Score:8.7
Affected Products
Vendor
Product
Action
Vendor
Roskus
Product
Prospero Flow Crm
Roskus
Prospero Flow Crm
Exploits
No exploit reference
Common Weakness Enumeration
Common Attack Pattern Enumeration and Classification (CAPEC)
No CAPEC recorded yet
Related CVEs
Common Vulnerability Scoring System
Attack Vector
Network
Adjacent
Local
Physical
Privileges Required
None
Low
High
User Interaction
None
Required
Scope
Unchanged
Changed
Confidentiality
None
Low
High
Integrity
None
Low
High
Availability
None
Low
High
