Cross-Site Scripting Vulnerability in n8n Workflow Automation Platform
CVE-2026-25051

8.5HIGH

Key Information:

Vendor

N8n-io

Status
N8n
Vendor
CVE Published:
4 February 2026

What is CVE-2026-25051?

A Cross-Site Scripting vulnerability has been discovered in n8n, an open-source workflow automation platform, affecting versions prior to 1.123.2. This vulnerability arises in the processing of webhook responses and associated HTTP endpoints. In specific scenarios, the Content Security Policy (CSP) intended to secure HTML responses may fail to function effectively. An authenticated user with the capability to create or modify workflows could leverage this flaw to execute malicious scripts within the context of the same origin, potentially endangering other users interacting with the compromised workflow. This could ultimately lead to risks such as session hijacking and unauthorized account access. The issue has been addressed in version 1.123.2.

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Affected Version(s)

n8n < 1.123.2

References

https://github.com/n8n-io/n8n/security/advisories/GHSA-82...
x_refsource_CONFIRM
https://github.com/n8n-io/n8n/commit/ced34c0f93ab4c759a56...
x_refsource_MISC
https://github.com/n8n-io/n8n/commit/e8cf4d6bb3af94dc296c...
x_refsource_MISC

CVSS V4

Score:
8.5
Severity:
HIGH
Confidentiality:
High
Integrity:
High
Availability:
None
Attack Vector:
Network
Attack Complexity:
Low
Attack Required:
None
Privileges Required:
Undefined
User Interaction:
Unknown

Timeline

  • Vulnerability published

  • Vulnerability Reserved

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