CVE-2026-103258: n8n before 2.39.6 and 2.40.x before 2.40.1 Filter Bypass via Parameter Interpolation
n8n-io · n8n
Vendor fix available · Affected: n8n-io · Exploitation: unlikely (under 1%)
Not in CyberSIXT coverage yet: no article names this CVE. This page shows the public record.
Higher than 23% of scored CVEs
DescriptionCVE.org
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 products1
From the CVE record. A product or version that is not listed is unknown, not unaffected.
- n8n-io · n8nbefore 2.39.6; from 2.40.0 before 2.40.1
On the Atlas
Every published CVE is on the CyberSIXT Atlas, grouped by weakness, vendor and month.
- Exploitation
- Unlikely (under 1%). EPSS under 1%, or no score yet.
- CISA KEV
- Not listed
- Public check
- No public nuclei template
- Vendor
- n8n-io
- Published
- October 2026
CoverageNo articles yet
No CyberSIXT article names CVE-2026-103258 yet, so there is no coverage timeline, action brief or change log for it. Everything on this page comes from the public CVE record, CISA KEV, EPSS and the nuclei template index. Search the archive or see the CVEs in the news.