CVE-2026-77759 — IDOR and missing authorization in the Prospero Flow CRM transaction API allow cross-tenant reading of financial records
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 …
Published: 2026-08-21 · CVSS: 8.7 · CVSS 4.0
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.
Source: CVE Program · Revision 8b16575c39f1e1810c5e863010da073d2d3285e7