CVE-2026-103258
n8n versions before 2.39.6 and 2.40.0 before 2.40.1 contain an unescaped parameter interpolation…
- Risk score
- 45/100
- CVSS
- 6.8 v3.1
- Exploit chance (30 days)
- 0.3%
- Published
- 1 Oct 2026
Open in the live forecast Today's forecast
What to know
- What it is
- 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 externa…
- Affected
- See advisory
- Fix
- Upgrade the product to 2.39.6, 2.40.0 or 2.40.1 (whichever matches your release line), or later.
- Exploitation
- No known exploitation
Why it is Yellow
- CVSS 6.8 medium
References
Original 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.
Last activity 1 Oct 2026. Patch Forecast updates every hour.