CVE-2026-103258
6.9
CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:L/VI:N/VA:N/SC:H/SI:N/SA:N
Summary
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 Software
| Vendor | Product | Version Range | Status |
|---|---|---|---|
| n8n-io | n8n | 0 < 2.39.6 | affected |
| n8n-io | n8n | 2.40.0 < 2.40.1 | affected |
Weaknesses
- CWE-943: Improper Neutralization of Special Elements in Data Query Logic
References
- https://github.com/n8n-io/n8n/security/advisories/GHSA-5pg9-2vqx-r6jm
- https://www.vulncheck.com/advisories/n8n-before-2.39.6-and-2.40-x-before-2.40.1-filter-bypass-via-parameter-interpolation
Feedback
Was this page helpful?
Glad to hear it! Please tell us how we can improve.
Sorry to hear that. Please tell us how we can improve.