CVE-2026-56349

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.
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
VulnCheckCNA
6.3 MEDIUM
NETWORK
LOW
NONE
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
Base Score
CVSS 3.x
EPSS Score
Percentile: Unknown
Early Detection
Affected products identified ahead of NVD analysis through intelligence sources.
VendorProductVersionSource
n8nn8n
𝑥
< 2.10.0
CNA
Common Weakness Enumeration
References
https://github.com/n8n-io/n8n/security/advisories/GHSA-fvfv-ppw4-7h2w
https://www.vulncheck.com/advisories/n8n-guardrail-node-bypass-via-crafted-input