GHSA-2vx9-7wpg-88jq: n8n: Legacy ExecuteWorkflow Node Bypassed File Path Restrictions

The ExecuteWorkflow node’s localFile source option read workflow files from disk without applying checks enforced by other file-reading nodes. An authenticated user with permission to create or modify workflows could supply an arbitrary file path via the REST API, bypassing the N8N_RESTRICT_FILE_ACCESS_TO restriction. This allowed the attacker to determine whether arbitrary files exist on the server host. Where the targeted path contained a valid workflow JSON file, the file could additionally be loaded and executed, potentially triggering actions on downstream systems connected to that workflow.

The localFile source option is hidden from the n8n UI since v1.2 but remains accessible via the REST API.