CVE-2025-71327: Flowiseai Flowise

Critical severity, CVSS 9.1. EPSS: 0.7% chance of exploitation in the next 30 days.

Flowise contains an authentication bypass vulnerability in the unprotected /api/v1/account/register endpoint that allows unauthenticated attackers to create user accounts. Remote attackers can exploit this endpoint to register arbitrary accounts and authenticate to the system, gaining full API access without credentials.

Affected products

• Flowiseai Flowise: version 3.0.1 only

Published 2026-06-25. Last modified 2026-09-30.