n8nPublished 14 Oct 2026NVD status: Deferred

CVE-2026-110846

n8n before 2.41.4 and 2.42.x before 2.42.1 contains a signature bypass in the waiting-webhook endpoint, which selects Send-and-Wait validation before normalising an alternate node reference form.

Componentn8n
Severityhigh (CVSS 7)
CVSS vectorCVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:L/VI:L/VA:N/SC:H/SI:H/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Published (NVD)2026-10-14
Affected versions
< 2.41.4
>= 2.42.0, < 2.42.1
from the CVE Program record written by the CNA that assigned the CVE
Fixed in2.41.4, 2.42.1
WeaknessCWE-180
CISA KEVnot listed

NVD description

n8n before 2.41.4 and 2.42.x before 2.42.1 contains a signature bypass in the waiting-webhook endpoint, which selects Send-and-Wait validation before normalising an alternate node reference form. Attackers holding an execution's resume token can approve waiting executions meant for others, running downstream actions under the workflow owner's credentials, potentially including command execution.

What to do

  • Upgrade n8n to the fixed release of the branch you run: 2.41.4 or 2.42.1, or later.
  • Do not expose the component's API or UI to the internet without authentication in front of it.

Sources

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