#VU122482 Arbitrary file upload in n8n - CVE-2026-25056
Published: February 9, 2026
Vulnerability identifier: #VU122482
Vulnerability risk: Medium
CVSSv4.0: 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/E:U/U:Green
CVE-ID: CVE-2026-25056
CWE-ID: CWE-434
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerable software:
n8n
n8n
Software vendor:
n8n
n8n
Description
The vulnerability allows a remote user to compromise vulnerable system.
The vulnerability exists due to insufficient validation of file during file upload in the Merge node's SQL Query mode. A remote user with permission to create or modify workflows can write arbitrary files to the n8n server's filesystem and execute them on the server.
Remediation
Install updates from vendor's website.