CVE-2026-103251

high

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.

References

https://www.vulncheck.com/advisories/n8n-before-1.123.80-2.39.6-and-2.40.1-package-install-validation-bypass-via-pubsub

https://github.com/n8n-io/n8n/security/advisories/GHSA-fmmv-p585-7c8x

https://euvd.enisa.europa.eu/vulnerability/EUVD-2026-90645

Details

Source: Mitre, NVD

Published: 2026-10-01

Updated: 2026-10-01

Risk Information

CVSS v2

Base Score: 6.5

Vector: CVSS2#AV:A/AC:H/Au:S/C:C/I:C/A:C

Severity: Medium

CVSS v3

Base Score: 7.1

Vector: CVSS:3.1/AV:A/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H

Severity: High

CVSS v4

Base 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

Severity: High

EPSS

EPSS: 0.00201