CVE-2026-85167

n8n before 2.36.2 Query Injection via Elasticsearch Firestore Nodes

MEDIUM
6.5
CVSS Score
Published: September 3, 2026 at 11:22 AM UTC
Updated: September 10, 2026 at 08:08 PM UTC
2 products affected across 2 vendorsN8NN8N

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Severity
MEDIUM6.5
Exploit prediction
EPSS 0.4%
SSVC
No known exploit

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.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

95%
v < 2.35.4v < 2.36.22.36.0 ≤ v < 2.36.2
Affected range stops below 2.35.4, so it looks safe — our inference, not a vendor statement
Affected range stops below 2.36.2, so it looks safe — our inference, not a vendor statement
v < 2.35.4v < 2.36.2
Vendor states this is fixed in 2.35.4 (unaffected)
Vendor states this is fixed in 2.36.2 (unaffected)

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

SSVC — Action Prioritization

SSVCNo known exploitNot automatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

Attack Vector
NETWORK
Complexity
LOW
Privileges
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
HIGH
Integrity
NONE
Availability
NONE
Vector?

Quick Info

StatusANALYZED
CWE
CWE-943

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