Vulnerabilities CVE-2026-77759

CVE-2026-77759

High

Open

TLP:CLEAR

IDOR and missing authorization in the Prospero Flow CRM transaction API allow cross-tenant reading of financial records

NVD CVE.org

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Description

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.

Details

CVSS Score: 8.7
CVSS Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N
Confidence: 90%
Published: Aug 21, 2026
Last Modified: Aug 21, 2026

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