All vulnerabilities
CVE-2026-103251GHSA-fmmv-p585-7c8x

n8n before 1.123.80, 2.39.6, and 2.40.1 Package Install Validation Bypass via PubSub

n8n-io n8nFrameworks
Open in ThreatlineRecord JSON
CVSS
7.5High
ExploitationNo known exploitationNot in CISA KEV, which does not prove it is unexploitedCISA KEV
Exploit odds (EPSS)0.20%Chance of exploitation activity in the next 30 days, higher than 9% of CVEs. Scored 23 Oct 2026FIRST EPSS
Fixed in1.123.80Also 2.39.6, 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 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.

Text from CVE List

Affected versions 3

  • n8naffected: all versions before 1.123.80CVE List
  • n8naffected: 2.0.0 before 2.39.6CVE List
  • n8naffected: 2.40.0 before 2.40.1CVE List

References 2