Vulnerability DatabaseCVE-2026-56349
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CVE-2026-56349
Published:July 15, 2026
Updated:August 04, 2026
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.
Affected Packages
n8n (NPM):
Affected version(s) >=0.0.1 <2.10.0
Fix Suggestion:
Update to version 2.10.0
Related Resources (7)
https://www.vulncheck.com/advisories/n8n-guardrail-node-bypass-via-crafted-input
https://github.com/n8n-io/n8n
https://github.com/n8n-io/n8n/security/advisories/GHSA-fvfv-ppw4-7h2w
https://nvd.nist.gov/vuln/detail/CVE-2026-56349
https://github.com/n8n-io/n8n/releases/tag/n8n@2.10.0
https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/56xxx/CVE-2026-56349.json
https://github.com/n8n-io/n8n/commit/8d0251d1deef256fd3d9176f05dedab62afde918
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CVSS v4
Base Score:
6.3
Attack Vector
NETWORK
Attack Complexity
LOW
Attack Requirements
PRESENT
Privileges Required
NONE
User Interaction
NONE
Vulnerable System Confidentiality
NONE
Vulnerable System Integrity
LOW
Vulnerable System Availability
NONE
Subsequent System Confidentiality
NONE
Subsequent System Integrity
NONE
Subsequent System Availability
NONE
CVSS v3
Base Score:
5.3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
NONE
Integrity
LOW
Availability
NONE
Weakness Type (CWE)
Protection Mechanism Failure
CWE-693
Improper Input Validation
CWE-20
EPSS
Base Score:
0.34