CVE-2026-42230: URL Redirection to Untrusted Site

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 redirecturi values to be registered. When a user denies the MCP OAuth consent dialog,...

Open Redirect

Overview n8n-editor-ui is a Workflow Editor UI for n8n Affected versions of this package are vulnerable to Open Redirect via the handleDeny process. An attacker can redirect users to an external, attacker-controlled site by registering arbitrary redirecturi values and enticing victims to interact...