CVE-2026-77759

HIGHCVSS 8.7/10

Last modified

CVE-2026-77759 is a high-severity vulnerability rated 8.7/10 on the CVSS scale. 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..

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.

Metrics

CVSS 4.0
8.7/10

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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

Weakness Enumeration

Affected Software

Source: CNA advisory (CVE.org). NVD analysis pending.

VendorProductVersions
RoskusProspero Flow CRM>= 5.0.0, < 5.3.6

References

Timeline

Published
Last Modified
Status
Received

Frequently Asked Questions

What is 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.
How severe is CVE-2026-77759?
CVE-2026-77759 has a CVSS score of 8.7/10 (HIGH severity).
How do I fix CVE-2026-77759?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

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Source: NVD / NIST