Nuxt: URL-handling weaknesses in `navigateTo` and `reloadNuxtApp`: SSR open redirect, client-side script execution via the `open` option, and protocol-relative bypass in `reloadNuxtApp`

Summary Three weaknesses in Nuxt's client-navigation URL handling, all reachable from documented public APIs navigateTo and reloadNuxtApp: 1. SSR open redirect in navigateTo via path-normalisation bypass. navigateTo decided whether a target was external by inspecting the raw input with...