# CVE-2024-36420: Flowise - RCE

> Live exploitation tracking for CVE-2024-36420 by the CrowdSec Live Exploit Tracker, built from real-world attack data crowdsourced from CrowdSec's global network.

Page: https://tracker.crowdsec.net/cves/CVE-2024-36420

## Key facts

- **Exploitation phase:** Limited Exploitation. The vulnerability is known but shows very limited attacker interest or exploitation activity.
- **CVSS score:** 7.5
- **Public exploit available:** Yes
- **Affected products:** FlowiseAI Flowise
- **Weaknesses:** CWE-22 (Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal'))
- **Tags:** ai_mcp, web_application

## 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.

## CrowdSec analysis

[CVE-2024-36420](https://euvd.enisa.europa.eu/vulnerability/CVE-2024-36420) is a vulnerability in Flowise version 1.4.3 that allows attackers to exploit the `/api/v1/openai-assistants-file` endpoint for arbitrary file reading due to improper sanitization of user input. This flaw could enable remote attackers to access sensitive files on the server, potentially leading to information disclosure and further compromise of the affected system. No patches are currently available for this issue.

CrowdSec has been tracking this vulnerability and its exploits since 3rd of June 2026.

Insights from the CrowdSec network reveal that the attackers trying to exploit CVE-2024-36420 are composed of a fairly even mix of opportunistic and targeted actors. Some attackers employ preliminary reconnaissance, while others use indiscriminate scanning.
CrowdSec data also reveals a clear uptick in attacks involving CVE-2024-36420 over the past week. Activity is above the usual baseline, suggesting growing attention from attackers. This may reflect rising awareness, recent exploit releases, or expanded targeting efforts.

Attackers exploit the `/api/v1/openai-assistants-file` endpoint by sending crafted POST requests with a `fileName` parameter containing path traversal sequences (e.g., `../../`) to read arbitrary files from the server.

## Timeline

- 2024-07-01: CVE Published. CVE-2024-36420 is published to NVD.
- 2026-06-03: Rule Released. CrowdSec releases a rule to detect CVE-2024-36420 exploitation attempts against the CrowdSec Network.
- 2026-06-04: CrowdSec First Seen. CrowdSec observes in-the-wild exploitation of CVE-2024-36420 for the first time.

## References

- https://securitylab.github.com/advisories/GHSL-2023-232_GHSL-2023-234_Flowise/
- https://github.com/FlowiseAI/Flowise/blob/e93ce07851cdc0fcde12374f301b8070f2043687/packages/server/src/index.ts#L982
- https://github.com/projectdiscovery/nuclei-templates/blob/main/http/cves/2024/CVE-2024-36420.yaml

## Live exploitation data

The [Live Exploit Tracker page](https://tracker.crowdsec.net/cves/CVE-2024-36420) follows observed exploitation activity for CVE-2024-36420. [Request an API key](https://tracker.crowdsec.net/request-api-key) for full access to its exploitation timeline, attacking IP addresses and blocklists.