A denial-of-service issue exists in the `check for language()` function within `django.utils.translation`. The problem occurs when the function receives numerous distinct and very long language codes, which are stored as keys in an in-memory cache, leading to excessive process memory consumption. These codes are passed to the function via the `set language()` view in `django.views.i18n`, which is not routed by default. Memory consumption is limited by the `DATA UPLOAD MAX MEMORY SIZE` setting and a fixed maximum number of cache entries.