CVE-2026-103258 — n8n before 2.39.6 and 2.40.x before 2.40.1 Filter Bypass via Parameter Interpolation
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 attack…
Published: 2026-10-01 · CVSS: 6.9 · CVSS 4.0
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.
Source: CVE Program · Revision 8b16575c39f1e1810c5e863010da073d2d3285e7