CVE-2026-103251 — n8n before 1.123.80, 2.39.6, and 2.40.1 Package Install Validation Bypass via PubSub
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…
Published: 2026-10-01 · CVSS: 7.5 · CVSS 4.0
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.
Source: CVE Program · Revision 8b16575c39f1e1810c5e863010da073d2d3285e7