Electron: Custom protocol with supportFetchAPI but not corsEnabled allows cross-origin reads

{
                    "vendor": "electron",
                    "product": "electron",
                    "versions": [
                        {
                            "version": "< 39.8.10",
                            "status": "affected"
                        },
                        {
                            "version": ">= 40.0.0-alpha.1, < 40.9.3",
                            "status": "affected"
                        },
                        {
                            "version": ">= 41.0.0-alpha.1, < 41.4.0",
                            "status": "affected"
                        },
                        {
                            "version": ">= 42.0.0-alpha.1, < 42.0.0",
                            "status": "affected"
                        }
                    ]
                }