---
id: CVE-2026-103260
title: >-
  n8n versions before 2.39.6 and 2.40.0 before 2.40.1 contain an approval bypass
  vulnerability in the Send and Wait node's Approve Within Chat mode
summary: >-
  n8n versions before 2.39.6 and 2.40.0 before 2.40.1 contain an approval bypass
  vulnerability in the Send and Wait node's Approve Within Chat mode. Attackers
  can submit resume requests without verification of the requester's identity or
  a…
severity: medium
cvss: 4
cvssVector: 'CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:N/I:L/A:N'
cwe:
  - CWE-862
vendor: n8n-io
product: n8n
affected:
  - n8n < 2.39.6
  - n8n >= 2.40.0 < 2.40.1
published: '2026-10-01'
updated: '2026-10-01'
sourceUpdated: '2026-10-01T11:17:20.793'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-103260'
references:
  - url: 'https://github.com/n8n-io/n8n/security/advisories/GHSA-342v-gmh6-738j'
    label: disclosure@vulncheck.com
  - url: >-
      https://www.vulncheck.com/advisories/n8n-before-2.39.6-and-2.40-x-before-2.40.1-approval-bypass-via-send-and-wait-node
    label: disclosure@vulncheck.com
tags:
  - nvd
  - cve.org
ingestedAt: '2026-10-01T11:42:53.804Z'
ssvc:
  exploitation: none
  automatable: 'no'
  technicalImpact: partial
  timestamp: '2026-10-01T13:28:39.138479Z'
---

## Overview

n8n versions before 2.39.6 and 2.40.0 before 2.40.1 contain an approval bypass vulnerability in the Send and Wait node's Approve Within Chat mode. Attackers can submit resume requests without verification of the requester's identity or approval permissions, allowing unauthenticated users to advance waiting executions and trigger guarded actions.

## Remediation

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