AI agent vulnerability · n8n

GHSA-fvfv-ppw4-7h2w: n8n has a Guardrail Node Bypass

mediumCVSS 4.0 6.3 · 3.1 3.7

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.

Published Feb 26, 2026

Affected packages

n8n

Ecosystem: npm
Affected: < 2.10.0
Fixed in: 2.10.0
Check: npm ls n8n

Advisory details

From the GitHub Advisory Database (CC BY 4.0).

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 upgrading is not immediately possible, administrators should consider the following temporary mitigations:

Limit access to trusted users.
Review asses the practical impact of guardrail bypasses in your usecase and adjust your workflow accordingly.

These workarounds do not fully remediate the risk and should only be used as short-term mitigation measures.

Credited to akirilov.

References

How this page is made: the data panel comes from the GitHub Advisory Database, CISA’s KEV catalog, the NVD and FIRST EPSS, and updates twice a day. No analysis has been written for this entry yet. Methodology

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