Nuxt: Unauthenticated CPU exhaustion parsing and hashing the Nuxt island endpoint body before hash validation

Impact The internal island renderer endpoint /nuxtisland/... decodes and hashes attacker-controlled request input before it validates the URL-resident hash. An unauthenticated POST /nuxtisland/.json with a large JSON body for example 4.6 MB / 150k keys is fully read, destr-parsed, and run through...