CVE-2026-1470: Authenticated users can bypass the Expression sandbox mechanism to achieve full remote code execution on n8n’s main node.

Severity: critical (CVSS 9.9 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 20.4% probability of exploitation in the next 30 days
Public exploit or detection template: yes
Published: 2026-01-27 · updated 2026-06-17
Weakness: CWE-95

Description

n8n contains a critical Remote Code Execution (RCE) vulnerability in its workflow Expression evaluation system. Expressions supplied by authenticated users during workflow configuration may be evaluated in an execution context that is not sufficiently isolated from the underlying runtime. An authenticated attacker could abuse this behavior to execute arbitrary code with the privileges of the n8n process. Successful exploitation may lead to full compromise of the affected instance, including unauthorized access to sensitive data, modification of workflows, and execution of system-level operations.

Affected products

n8n-io n8n: before 1.123.17; from 2.0.0 before 2.4.5; 2.5.0 — fixed in 1.123.17, 2.4.5

How to fix

Upgrade to a fixed version: n8n-io n8n 1.123.17, 2.4.5. Check the vendor advisory for mitigations.

References

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