Stored XSS Vulnerability in n8n Workflow Automation Platform
CVE-2025-52478

8.7HIGH

Key Information:

Vendor

N8n-io

Status
N8n
Vendor
CVE Published:
19 August 2025

What is CVE-2025-52478?

A stored Cross-Site Scripting vulnerability has been discovered in the n8n workflow automation platform, affecting versions 1.77.0 through 1.98.1. The flaw resides in the Form Trigger node's HTML form element, where an authenticated attacker can inject malicious HTML content. By utilizing an with a srcdoc payload or a tag's onerror event, the attacker can execute arbitrary JavaScript. This allows for the exfiltration of sensitive information such as n8n-browserId and session cookies from authenticated users accessing a crafted form. Successful exploitation can result in Account Takeover (ATO), enabling the attacker to manipulate user account details, particularly if two-factor authentication is not enabled. It is critical for users to update to version 1.98.2 or later to mitigate this vulnerability.

Affected Version(s)

n8n >= 1.77.0, < 1.98.2

References

https://github.com/n8n-io/n8n/security/advisories/GHSA-hf...
x_refsource_CONFIRM
https://github.com/n8n-io/n8n/pull/16329
x_refsource_MISC
https://github.com/n8n-io/n8n/commit/7940384a85041a1890b1...
x_refsource_MISC

CVSS V3.1

Score:
8.7
Severity:
HIGH
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
Low
User Interaction:
Required
Scope:
Changed

Timeline

  • Vulnerability published

  • Vulnerability Reserved

JSON
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CVE-2025-52478 : Stored XSS Vulnerability in n8n Workflow Automation Platform