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Advisories

n8n before 2.36.2 Expression Sandbox Bypass via SpreadElement

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severity
high
date
Affecting

  • n8n >= 0, < 2.36.2

  • n8n >= 0, < 2.35.4

CWE
  • CWE-95 Improper Neutralization of Directives in Dynamically Evaluated Code ('Eval Injection')
CVSS
7.2
CVSS V4 Vector
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:H/VA:H/SC:N/SI:N/SA:N
Credit
th3-j0k3r
Description
n8n versions before 2.36.2 contain an expression sandbox bypass vulnerability where free identifiers in spread, computed-key, switch-case, or class-extension positions resolve against process globals. Authenticated users with workflow-edit permission can mutate host objects through expression evaluation, with changes persisting process-wide until restart.

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