CVE-2026-56349: n8n

Medium severity, CVSS 6.3. EPSS: 0.5% chance of exploitation in the next 30 days.

n8n before version 2.10.0 contains an input validation vulnerability in the Guardrail node that allows attackers to bypass default guardrail instructions. End users can craft malicious inputs to circumvent guardrail protections and compromise workflow integrity.

Affected products

• n8n n8n: before 2.10.0 (fixed in 2.10.0)

Published 2026-07-15. Last modified 2026-07-15.