Stored Cross-Site Scripting Vulnerability in n8n by n8n
CVE-2026-110849

7.2HIGH

Key Information:

Vendor

N8n-io

Status
N8n
Vendor
CVE Published:
14 October 2026

What is CVE-2026-110849?

A stored cross-site scripting vulnerability exists in n8n that affects versions before 1.123.83, 2.41.4, and 2.42.1. This flaw allows unauthorized users to upload malicious files which, when previewed, can execute scripts in the context of the n8n application. By exploiting this vulnerability, an attacker can gain unauthorized access to session-related information of the user who previews the crafted item, posing significant security risks.

Affected Version(s)

n8n 0 < 1.123.83

n8n 2.0.0 < 2.41.4

n8n 2.42.0 < 2.42.1

References

https://github.com/n8n-io/n8n/security/advisories/GHSA-29...
vendor-advisory
https://www.vulncheck.com/advisories/n8n-before-1.123.83-...
third-party-advisory

CVSS V4

Score:
7.2
Severity:
HIGH
Confidentiality:
High
Integrity:
High
Availability:
None
Attack Vector:
Network
Attack Complexity:
Low
Attack Required:
Physical
Privileges Required:
Undefined
User Interaction:
Unknown

Timeline

  • Vulnerability published

  • Vulnerability Reserved

Credit

AdamKorcz
.