---
id: CVE-2026-91935
title: >-
  Flowise before 3.1.4 fails to validate baseURL parameters in chat-model nodes,
  allowing authenticated users to redirect requests to arbitrary hosts
summary: >-
  Flowise before 3.1.4 fails to validate baseURL parameters in chat-model nodes,
  allowing authenticated users to redirect requests to arbitrary hosts.
  Attackers with chatflows:create or chatflows:update permissions can exfiltrate
  LLM provi…
severity: high
cvss: 8.3
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:L'
cwe:
  - CWE-918
vendor: FlowiseAI
product: Flowise
affected:
  - Flowise < 3.1.4
  - Flowise < 3.1.4
published: '2026-09-15'
updated: '2026-09-20'
sourceUpdated: '2026-09-20T01:16:33.733'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-91935'
references:
  - url: >-
      https://github.com/FlowiseAI/Flowise/security/advisories/GHSA-hx55-h48h-7rw9
    label: disclosure@vulncheck.com
  - url: >-
      https://www.vulncheck.com/advisories/flowise-before-3.1.4-ssrf-and-api-key-exfiltration-via-chat-model-nodes
    label: disclosure@vulncheck.com
tags:
  - nvd
  - cve.org
  - exploit-available
exploitAvailable: true
ssvc:
  exploitation: poc
  automatable: 'no'
  technicalImpact: total
  timestamp: '2026-09-20T00:27:47.124970Z'
epss: 0.00388
epssPercentile: 0.30114
ingestedAt: '2026-09-15T15:39:12.924Z'
---

## Overview

Flowise before 3.1.4 fails to validate baseURL parameters in chat-model nodes, allowing authenticated users to redirect requests to arbitrary hosts. Attackers with chatflows:create or chatflows:update permissions can exfiltrate LLM provider API keys by redirecting requests to cloud metadata services or internal hosts.

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.