---
id: GHSA-9cc5-j3qq-69gv
title: >-
  Duplicate Advisory: Unauthenticated Flow Execution via Webhook Authentication
  Bypass
summary: >-
  Duplicate Advisory: Unauthenticated Flow Execution via Webhook Authentication
  Bypass
severity: critical
cvss: 9.8
cwe:
  - CWE-306
vendor: langflow
product: langflow
ecosystem: pip
affected:
  - 'langflow >= 1.7.0, <= 1.9.0'
published: '2026-07-17'
updated: '2026-10-05'
sourceUpdated: '2026-10-05T22:31:17Z'
source: GHSA
sourceUrl: 'https://github.com/advisories/GHSA-9cc5-j3qq-69gv'
references:
  - url: 'https://nvd.nist.gov/vuln/detail/CVE-2026-8505'
  - url: 'https://www.ibm.com/support/pages/node/7278921'
  - url: 'https://github.com/advisories/GHSA-9cc5-j3qq-69gv'
tags:
  - ghsa
  - pip
ingestedAt: '2026-10-05T22:35:24.746Z'
---

## Overview

## Duplicate Advisory

This advisory has been withdrawn because it is a duplicate of GHSA-cf6m-vc3m-7cgm. This link is maintained to preserve external references.

## Original Description
IBM Langflow OSS 1.0.0 through 1.10.0 has a vulnerability in Langflow's webhook authentication logic allows unauthenticated users to trigger the execution of any flow. The system incorrectly bypasses API key validation when the WEBHOOK_AUTH_ENABLE configuration is set to False (which is the default setting). This allows a remote attacker who knows a flow's UUID to execute it as if they were the owner, potentially leading to Remote Code Execution (RCE).

## Affected packages

- `langflow >= 1.7.0, <= 1.9.0`

## Remediation

Refer to the advisory for the patched release.