| Component | n8n |
| Severity | medium (CVSS 6.3) |
| CVSS vector | CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X |
| Published (NVD) | 2026-07-15 |
| Affected versions | < 2.10.0 read from the advisory text: NVD has not published CPE data yet |
| Fixed in | 2.10.0 |
| Weakness | CWE-20 |
| CISA KEV | not listed |
NVD 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.
What to do
- Upgrade n8n to
2.10.0or later. - Do not expose the component's API or UI to the internet without authentication in front of it.
Sources
- NVD: CVE-2026-56349
- https://github.com/n8n-io/n8n/security/advisories/GHSA-fvfv-ppw4-7h2w
- https://www.vulncheck.com/advisories/n8n-guardrail-node-bypass-via-crafted-input
Read more
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