CVE-2026-85167 n8n before 2.36.2 Query Injection via Elasticsearch Firestore Nodes
Attackers can inject query operators into Elasticsearch or Firestore nodes to read entire collections instead of single documents.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2026-85167?
CVE-2026-85167 is a medium-severity code injection vulnerability in N8n N8n, published on 3 Sep 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official 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.
Weakness: CWE-943
Which versions are affected by CVE-2026-85167?
It affects 1 product.
Products include N8n N8n.
How do I fix CVE-2026-85167?
Upgrade to a fixed version.
Upgrade, and never evaluate templates, expressions or code built from user input. More about Code injection.
Is CVE-2026-85167 being exploited?
There is no known exploitation of CVE-2026-85167 in the wild and no public exploit code.
Other vulnerabilities in N8n N8n
- CVE-2025-68613 n8n Improper Control of Dynamically-Managed Code Resources
- CVE-2026-21877 n8n is vulnerable to Remote Code Execution via Arbitrary File Write
- CVE-2026-21858 n8n Vulnerable to Unauthenticated File Access via Improper Webhook Request Handling
- CVE-2026-1470 n8n Unsafe Workflow Expression Evaluation Allows Remote Code Execution
- CVE-2025-68668 n8n Vulnerable to Arbitrary Command Execution in Pyodide based Python Code Node
Sources
Also known as GHSA-7mp8-q29w-rc68, GHSA-wxwj-8wv6-vpw2, MINI-g9mm-p683-7792.