Blinko through 1.8.8 allows directory traversal, overwriting startup files as root, via installPlugin. It builds the plugin install path from an unsanitized name in server/routerTrpc/plugin.ts, and the plugin.installPlugin tRPC procedure is…

{
                    "defaultStatus": "unknown",
                    "product": "Blinko",
                    "programFiles": [
                        "server/routerTrpc/plugin.ts"
                    ],
                    "programRoutines": [
                        {
                            "name": "installPlugin"
                        },
                        {
                            "name": "getPluginDir"
                        }
                    ],
                    "repo": "https://github.com/blinko-space/blinko",
                    "vendor": "Blinko",
                    "versions": [
                        {
                            "lessThanOrEqual": "1.8.8",
                            "status": "affected",
                            "version": "0",
                            "versionType": "semver"
                        }
                    ]
                }