Cross-site scripting in n8n - CVE-2026-110849
Published: September 30, 2026 / Updated: October 16, 2026
Vulnerability identifier: #VU153008
CSH Severity: Low
CVSS v4: 5.1 [CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N]
CVE-ID: CVE-2026-110849
CWE-ID: CWE-79
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote user to execute arbitrary script in the n8n origin.
The vulnerability exists due to improper neutralization of active content in the binary-data file-preview modal when previewing a crafted uploaded binary-data item. A remote user can upload a crafted item for a victim to preview to execute arbitrary script in the n8n origin.
User interaction is required to preview the crafted item.
Affected software
n8n
How to mitigate CVE-2026-110849
Install security update from vendor's website.
n8n - addressed in versions 1.123.83, 2.41.4, 2.42.1