CVE-2026-59207

Name of the Vulnerable Software and Affected Versions n8n versions prior to 2.27.4 n8n versions prior to 2.28.1

Description The AI Agents feature fails to enforce the Allowed HTTP Request Domains restriction configured on credentials when an MCP tool is directed to an arbitrary URL. This allows a member-level user with use-only access to a shared credential to exfiltrate the credential secret to an external server under their control.

Recommendations Update to version 2.27.4 or later. Update to version 2.28.1 or later.