CVE-2026-56349

Medium

Description

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.

SeverityMedium

CVSS6.3

Exploit probability—

ProductN8n

PublishedJul 15, 2026

First seenJul 15, 2026

Weakness typeCWE-20Improper input validation

How to fix

Update

n8n2.10.0 or later

Vendor advisories

github.com/n8n-io/n8n/security/advisories/GHSA-fvfv-ppw4-7h2w

Affected products

Product	Affected versions	Fixed in
n8nnpm	v < 2.10.0	2.10.0

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