As I understand it, this isn't imposed as a limit for several reasons.
E.g.:
It cannot be determined exactly as wind will vary by height, location, time etc., so the pilots observed wind may vary either way from a reported wind.
Upto the limit of being able to roll out in a straight line using available control forces, the requirement is one of pilot skill in transitioning from a crabbed or wing down approach to a touchdown without appreciable sideways drift. Thus a more experienced and skilled pilot may reasonably attempt a higher crosswind than a less skilled pilot.
So it comes down to airmanship and judgement (not to forget SOPs of course)