All vulnerabilities
CVE-2026-103260GHSA-342v-gmh6-738j

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

n8n-io n8nFrameworks
Open in ThreatlineRecord JSON
CVSS
6.3Medium
ExploitationNo known exploitationNot in CISA KEV, which does not prove it is unexploitedCISA KEV
Exploit odds (EPSS)0.28%Chance of exploitation activity in the next 30 days, higher than 19% of CVEs. Scored 23 Oct 2026FIRST EPSS
Fixed in2.39.6Also 2.40.1CVE List
Published1 Oct 2026Updated 1 Oct 2026CVE List

What fixes it

A fixed version on one release line is not the upgrade target for every line. Check your exact version and any vendor backports.

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.

Text from CVE List

Affected versions 2

  • n8naffected: all versions before 2.39.6CVE List
  • n8naffected: 2.40.0 before 2.40.1CVE List

References 2