| Component | Flowise |
| Severity | medium (CVSS 6.5) |
| CVSS vector | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N |
| Published (NVD) | 2026-08-13 |
| Last modified | 2026-09-03 |
| Affected versions | flowise < 3.1.3 |
| Fixed in | 3.1.3 |
| Weakness | CWE-639 |
| CISA KEV | not listed |
NVD description
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.
What to do
- Upgrade Flowise to
3.1.3or later. - Do not expose the component's API or UI to the internet without authentication in front of it.
Sources
- NVD: CVE-2026-73488
- https://github.com/FlowiseAI/Flowise/security/advisories/GHSA-2364-jh4q-m9vm
- https://www.vulncheck.com/advisories/flowise-before-idor-via-customer-default-source-endpoint
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