| Component | n8n |
| Severity | medium (CVSS 6.5) |
| CVSS vector | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N |
| Published (NVD) | 2026-09-03 |
| Last modified | 2026-09-10 |
| Affected versions | n8n < 2.35.4 n8n >= 2.36.0, < 2.36.2 |
| Fixed in | 2.35.4, 2.36.2 |
| Weakness | CWE-943 |
| CISA KEV | not listed |
NVD description
n8n before 2.35.4 and 2.36.x before 2.36.2 contain a query injection vulnerability in the Elasticsearch Document Get All and Google Cloud Firestore Document Query operations, which build their JSON query by interpolating expression values directly into the query string before parsing. A value containing quote and brace characters can close the intended field and introduce new query operators, turning an intended single-document lookup into a full-collection read.
What to do
- Upgrade n8n to
2.35.4or later (or the patched release of your branch: 2.36.2). - Do not expose the component's API or UI to the internet without authentication in front of it.
Sources
- NVD: CVE-2026-85167
- https://github.com/n8n-io/n8n/security/advisories/GHSA-wxwj-8wv6-vpw2
- https://www.vulncheck.com/advisories/n8n-before-2.36.2-query-injection-via-elasticsearch-firestore-nodes
Read more
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