medium6.8
CVE-2026-103258
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 …
Impact
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
| Product | Affected versions |
|---|---|
| N8n | before 2.39.6 |
| 2.40.0 | before 2.40.1 |
Versions were read from the advisory text. No structured product data has been published for this record yet.