Micronaut has Unbounded `bundleCache` in `ResourceBundleMessageSource` that Allows Memory Exhaustion via `Accept-Language` Header

Summary ResourceBundleMessageSource maintains two caches: messageCache bounded at 100 entries via ConcurrentLinkedHashMap and bundleCache unbounded ConcurrentHashMap. The bundleCache is keyed by Locale, baseName where the locale originates from the HTTP Accept-Language header. In applications tha...