CVE-2026-56349

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...

EUVD-2026-44624

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...

Improper Neutralization of Input Used for LLM Prompting

Overview @n8n/n8n-nodes-langchain is a Affected versions of this package are vulnerable to Improper Neutralization of Input Used for LLM Prompting via the Guardrail node. An attacker can modify workflow input to circumvent intended restrictions by crafting specific input values. Workaround This...

n8n has a Guardrail Node Bypass

Impact An end user interacting with a workflow that uses the Guardrail node could craft an input that bypasses the default guardrail instructions. Patches The issue has been fixed in n8n version 2.10.0. Users should upgrade to this version or later to remediate the vulnerability. Workarounds If...