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Advisories

n8n before 2.39.6 and 2.40.x before 2.40.1 Approval Bypass via Send and Wait Node

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severity
medium
date
Affecting

  • n8n >= 0, < 2.39.6

  • n8n >= 2.40.0, < 2.40.1

CWE
  • CWE-862 Missing Authorization
CVSS
6.3
CVSS V4 Vector
CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:L/VA:N/SC:N/SI:L/SA:N
Credit
tr4ce-ju
Description
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.

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