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 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.
- Published Oct 1, 2026
- CVSS 7.5 high
- 0.2% chance of exploitation in the next 30 days (EPSS)
- A fix is available