CVE-2026-77759

Severity CVSS v4.0:

HIGH

Type:

Unavailable / Other

Publication date:

21/08/2026

Last modified:

21/08/2026

Description

Authorization Bypass Through User-Controlled Key in the transaction API in Roskus Prospero<br /> Flow CRM 5.0.0 through 5.3.5 allows an authenticated user to read the transactions of other<br /> companies on the same instance via an incremented identifier in GET /api/transaction/{id},<br /> which is resolved without company scoping and without any permission check.

Impact

Vector 4.0

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 CVSS v4.0 Severity and Metrics:

Base Score: 8.70 HIGH
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

Attack Vector (AV): Network
Attack Complexity (AC): Low
Attack Requirements (AT): None
Privileges Required (PR): None
User Interaction (UI): None
Confidentiality (VC): High
Integrity (VI): None
Availability (VA): None
Confidentiality (SC): None
Integrity (SI): None
Availability (SA): None

Base Score 4.0

8.70

Severity 4.0

HIGH

CVE-2026-77759

Description

Impact

References to Advisories, Solutions, and Tools