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Advisories

n8n before 2.39.6 and 2.40.x before 2.40.1 Filter Bypass via Parameter Interpolation

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severity
medium
date
Affecting

  • n8n >= 0, < 2.39.6

  • n8n >= 2.40.0, < 2.40.1

CWE
  • CWE-943 Improper Neutralization of Special Elements in Data Query Logic
CVSS
6.9
CVSS V4 Vector
CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:L/VI:N/VA:N/SC:H/SI:N/SA:N
Credit
DarkLycn1976
Description
n8n versions before 2.39.6 and 2.40.0 before 2.40.1 contain an unescaped parameter interpolation vulnerability in SendGrid, Freshservice, and ServiceNow nodes that allows attackers to bypass filters by breaking out of query literals. Attackers can exploit this by binding vulnerable node parameters to untrusted external input to widen single-record lookups into match-all queries, exposing bulk data including contact lists, tickets, and directory entries.

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