CVE-2026-85172
Received Received - Intake

SSRF Bypass in n8n via Legacy Request Helper

Publication date: 2026-09-03

Last updated on: 2026-09-03

Assigner: VulnCheck

Description
n8n versions before 2.34.1 contain a server-side request forgery vulnerability in the legacy request helper function exposed to Code and Function nodes. The validation logic checks the uri property for SSRF safety while the underlying HTTP client uses the url property when both are present, allowing attackers to bypass validation by supplying a safe uri alongside a malicious url to access internal addresses.

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Meta Information

Published
2026-09-03
Last Modified
2026-09-03
Generated
2026-09-03
AI Q&A
2026-09-03
EPSS Evaluated
N/A
NVD
CVE-2026-85172
EUVD
EUVD-2026-70407

Affected Vendors & Products

Showing 3 associated CPEs
Vendor Product Version / Range
n8n n8n to 2.34.1 (exc)
n8n-io n8n to 2.34.1 (exc)
n8n-io n8n to 2.33.4 (exc)

Helpful Resources

Exploitability

CWE
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KEV
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CWE ID Description
CWE-918 The web server receives a URL or similar request from an upstream component and retrieves the contents of this URL, but it does not sufficiently ensure that the request is being sent to the expected destination.

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Executive Summary

This vulnerability is a server-side request forgery (SSRF) in n8n versions before 2.34.1. It exists in a legacy request helper function accessible to Code and Function nodes. The issue arises because the validation checks the 'uri' property for safety, but the HTTP client uses the 'url' property when both are present. Attackers can bypass validation by providing a safe 'uri' with a malicious 'url' to access internal addresses.

Impact Analysis

An attacker could exploit this to make unauthorized requests to internal systems, potentially accessing sensitive data or services. This could lead to data breaches, unauthorized actions on internal networks, or further exploitation of internal vulnerabilities.

Compliance Impact

This vulnerability could lead to unauthorized access to personal or sensitive data, violating GDPR and HIPAA requirements for data protection and access controls. Organizations using affected n8n versions may face compliance violations, legal penalties, and reputational damage.

Mitigation Strategies

Upgrade n8n to version 2.34.1 or later to address the SSRF vulnerability in the legacy request helper function.

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