CVE-2026-85167

n8n before 2.36.2 Query Injection via Elasticsearch Firestore Nodes

State: Published
Severity: 6.3 Medium
Published: Sep 3, 2026
Updated: Oct 29, 2026
Reserved: Sep 3, 2026

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.

Scores

CVSS	Score	Vector	Source
4.0	6.3 Medium	CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:N/SC:H/SI:N/SA:N	VulnCheck

Weaknesses

CWE-943 Improper Neutralization of Special Elements in Data Query Logic

Affected Products

Product	Versions
n8nn8n-io	2.36.0 to before 2.36.2Affected 2.36.2Not affected
n8nn8n-io	before 2.35.4Affected 2.35.4Not affected

References

GitHub Security Advisory (GHSA-wxwj-8wv6-vpw2)vendor-advisory
VulnCheck Advisory: n8n before 2.36.2 Query Injection via Elasticsearch Firestore Nodesthird-party-advisory

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