A default installation of DokuWiki sets three cookies.
As you can see, the default cookies required are functional cookies only. No tracking is implemented with these cookies.
Used for authentication after login. This holds the necessary data to (re)login a previously authenticated user.
Used for remembering helpful user preferences, like the size of the editor textarea.
The standard PHP session identifier. Used to hold temporary data and to avoid CSRF attacks.
Source: DokuWiki