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.
Advisories

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Fixes

Solution

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Workaround

No workaround given by the vendor.

History

Thu, 01 Oct 2026 11:00:00 +0000

Type Values Removed Values Added
Description 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.
Title n8n before 1.123.80, 2.39.6, and 2.40.1 Package Install Validation Bypass via PubSub
First Time appeared N8n
N8n n8n
Weaknesses CWE-862
CPEs cpe:2.3:a:n8n:n8n:*:*:*:*:*:*:*:*
Vendors & Products N8n
N8n n8n
References
Metrics cvssV3_1

{'score': 7.1, 'vector': 'CVSS:3.1/AV:A/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H'}

cvssV4_0

{'score': 7.5, 'vector': 'CVSS:4.0/AV:A/AC:L/AT:P/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N'}


Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: VulnCheck

Published:

Updated: 2026-10-01T10:41:57.207Z

Reserved: 2026-09-30T10:52:32.249Z

Link: CVE-2026-103251

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Deferred

Published: 2026-10-01T11:17:18.973

Modified: 2026-10-01T11:17:19.103

Link: CVE-2026-103251

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-10-01T12:30:07Z

Weaknesses