Is CVE-2026-42230 actively exploited?

No active exploitation of CVE-2026-42230 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2026-42230 be exploited remotely?

Yes. CVE-2026-42230 is exploitable remotely over the network (CVSS attack vector: Network).

What is the CVSS score of CVE-2026-42230?

CVE-2026-42230 has a CVSS score of 6.1 (MEDIUM).

HOME VULNERABILITIESCVE-2026-42230

MEDIUM

CVE-2026-42230

CWE-601Published: May 4, 2026· Updated: May 6, 2026

6.1

CVSS v3.1

EPSS:0.06%probability of exploitation in 30 daysPercentile:19.3th

Official Description

n8n is an open source workflow automation platform. Prior to versions 1.123.32, 2.17.4, and 2.18.1, the /mcp-oauth/register endpoint accepted OAuth client registrations without authentication, allowing arbitrary redirect_uri values to be registered. When a user denies the MCP OAuth consent dialog, the handleDeny handler redirects the user to the registered redirect_uri without validation, enabling an open redirect to an attacker-controlled URL. An attacker can craft a phishing link and send it to a victim; if the victim clicks "Deny" on the consent page, they are silently redirected to an external site. This issue has been patched in versions 1.123.32, 2.17.4, and 2.18.1.

NVD Source

Technical Analysis

CVE-2026-42230 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

Exploitation does not require any privileges, though user interaction (Required) is needed, which slightly reduces the risk of mass automated attacks.

The vulnerability has a "Changed" scope, meaning successful exploitation can impact components beyond the vulnerable component itself — such as the host operating system or adjacent services.