CVE-2026-103251: n8n versions before 1.123.80, from 2.0.0 before 2.39.6, and from 2.40.0 before 2.40.1 contain a validation bypass vulnerability in the community package…

PriorityP343high7.1CVSS 3.1

AVAACHPRLUINSUCHIHAH

EPSS

0.20%

9.1th percentile

n8n versions before 1.123.80, from 2.0.0 before 2.39.6, and from 2.40.0 before 2.40.1 contain a validation bypass vulnerability in the community package installation handler for queue mode deployments. Attackers with Redis write access can bypass name validation, permission checks, checksum verification, and npm safety checks to install arbitrary npm packages across all cluster instances without authentication.

Affected

3 ranges

Vendor	Product	Version range	Fixed in
n8n-io	n8n	< 1.123.80	1.123.80
n8n-io	n8n	>= 2.0.0 < 2.39.6	2.39.6
n8n-io	n8n	>= 2.40.0 < 2.40.1	2.40.1

CVSS provenance

nvdv3.17.1HIGHCVSS:3.1/AV:A/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H

nvdv4.07.5HIGHCVSS:4.0/AV:A/AC:L/AT:P/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/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

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