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CVE PROGRAM SOURCE RECORD6.9 Medium

CVE-2026-103258

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

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.

Affected products

Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.

n8n-io n8n

Default version status: unaffected

  • 0 to < 2.39.6affected
  • 2.40.0 to < 2.40.1affected
pkg:npm/n8n

References