SQL injection in n8n - CVE-2026-42233
Published: April 23, 2026
Vulnerability identifier: #VU127224
CSH Severity: Medium
CVSS v4: 8.6 [CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-42233
CWE-ID: CWE-89
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote user to disclose sensitive information.
The vulnerability exists due to improper input validation in the Oracle Database node Limit field when processing user-controlled expressions in the select operation. A remote user can supply a specially crafted expression value to disclose sensitive information.
Exploitation requires a workflow configuration in which external input is passed into the Limit field, such as through a webhook.
Affected software
n8n
How to mitigate CVE-2026-42233
Install security update from vendor's website.
n8n - addressed in versions 1.123.32, 2.17.4, 2.18.1