CVE-2026-42233

Critical

Description

n8n is an open source workflow automation platform. Prior to versions 1.123.32, 2.17.4, and 2.18.1, a flaw in the Oracle Database node's select operation allowed user-controlled input passed into the Limit field via expressions to be interpolated directly into the SQL query without sanitization or parameterization. In workflows where external input is passed into the Limit field (e.g., from a webhook), an attacker could inject arbitrary SQL and exfiltrate data from the connected Oracle database. This issue has been patched in versions 1.123.32, 2.17.4, and 2.18.1.

SeverityCritical
CVSS9.8
Exploit probability—
ProductN8n
PublishedMay 4, 2026
First seenMay 4, 2026
Weakness typeCWE-89SQL injection

How to fix

Update
  • n8n n8n1.123.32, 2.17.4 or later
  • n8n1.123.32, 2.18.1, 2.17.4 or later

Affected products

ProductAffected versionsFixed in
n8n n8nv < 1.123.32, 2.17.0 ≤ v < 2.17.4, 2.18.01.123.32, 2.17.4
n8nnpmv < 1.123.32, 2.18.0 ≤ v < 2.18.1, 2.0.0 ≤ v < 2.17.41.123.32, 2.18.1, 2.17.4

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