CVE-2024-36420

HIGH NUCLEI LAB

Flowise 1.4.3 - Arbitrary File Read via OpenAI Assistants File Endpoint

Title source: llm
STIX 2.1

Exploitation Summary

EIP tracks 1 public exploit for CVE-2024-36420. PoCs published by fineman999. A Nuclei detection template is also available.

AI-analyzed exploit summary This repository contains a functional Nuclei template and Docker-based lab for CVE-2024-36420, an arbitrary file read vulnerability in Flowise 1.4.3 via unsanitized fileName parameter in the /api/v1/openai-assistants-file endpoint. The PoC includes detailed reproduction steps and validation against both vulnerable and patched versions.

Description

Flowise is a drag & drop user interface to build a customized large language model flow. In version 1.4.3 of Flowise, the `/api/v1/openai-assistants-file` endpoint in `index.ts` is vulnerable to arbitrary file read due to lack of sanitization of the `fileName` body parameter. No known patches for this issue are available.

Exploits (1)

github WORKING POC
by fineman999 · poc
https://github.com/fineman999/POC_CVE-2024-36420

This repository contains a functional Nuclei template and Docker-based lab for CVE-2024-36420, an arbitrary file read vulnerability in Flowise 1.4.3 via unsanitized fileName parameter in the /api/v1/openai-assistants-file endpoint. The PoC includes detailed reproduction steps and validation against both vulnerable and patched versions.

Classification
Working Poc 95%
Attack Type
Info Leak
Complexity
Trivial
Reliability
Reliable
Target: Flowise 1.4.3
No auth needed
Prerequisites: Docker environment · Nuclei for template validation
devstral-2 · analyzed May 19, 2026 Full analysis →

Nuclei Templates (1)

Flowise 1.4.3 - Arbitrary File Read
HIGHVERIFIEDby fineman999

Scores

CVSS v3 7.5
EPSS 0.5749
EPSS Percentile 98.2%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

CISA SSVC

Vulnrichment
Exploitation none
Automatable yes
Technical Impact partial

Lab Environment

COMMUNITY
Community Lab
docker pull flowiseai/flowise:1.4.3

Details

CWE
CWE-74
Status published
Products (2)
flowiseai/flowise 1.4.3
npm/flowise 0npm
Published Jul 01, 2024
Tracked Since Feb 18, 2026