Medium severity · published Jul 15, 2026
CVE-2026-56349
n8n - Guardrail Node Bypass via Crafted Input
6.3
CVSS
0.5%
EPSS
No
On KEV
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.
Exploitation
Is it being used?
Exploit prediction (EPSS)0.5% · higher than 41% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
N8
n8n · n8n
before 2.10.0 · source: vendor
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-56349
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-56349
github.com
https://github.com/n8n-io/n8n/security/advisories/GHSA-fvfv-ppw4-7h2w
www.vulncheck.com
https://www.vulncheck.com/advisories/n8n-guardrail-node-bypass-via-crafted-input
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