CVE-2026-73488

Flowise versions before 3.1.3 contain an insecure direct object reference vulnerability in the GET /api/v1/organization/customer-default-source endpoint that allows authenticated attackers to access other customers' payment and profile data by manipulating the customerId parameter. Attackers can enumerate predictable customer IDs to retrieve sensitive information including email addresses, account balances, currency types, and billing configurations without authorization checks.

CVSS v3 6.5 MEDIUM

6.5^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 2.8 / Impact : 3.6

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact NONE

Availability Impact NONE

Scope UNCHANGED

References

Link	Resource
https://github.com/FlowiseAI/Flowise/security/advisories/GHSA-2364-jh4q-m9vm	Exploit Vendor Advisory
https://www.vulncheck.com/advisories/flowise-before-idor-via-customer-default-source-endpoint	Third Party Advisory
https://github.com/FlowiseAI/Flowise/security/advisories/GHSA-2364-jh4q-m9vm	Exploit Vendor Advisory

Configurations

Configuration 1 (hide)

cpe:2.3:a:flowiseai:flowise:*:*:*:*:*:*:*:*

History

No history.

Information

Published : 2026-08-13 12:17

Updated : 2026-09-03 18:39

NVD link : CVE-2026-73488

Mitre link : CVE-2026-73488

CVE.ORG link : CVE-2026-73488

JSON object : View

Products Affected

flowiseai

flowise

CWE

CWE-639

Authorization Bypass Through User-Controlled Key

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