My suggestion is that it would depend on whether the nature of the disability could affect the outcome of your degree process in any way. A physical disability might not matter in the least. Or it might, if it made access to some venues (much) more difficult. Or if it made interacting with a computer a slow and difficult process.
I believe that some European degree programs have time limits. Some difficulties might make that an issue. Inability to speak or to hear or to see might be an issue, though that might be something to be worked out with a supervisor. (I once had a blind math professor - his lectures at the chalkboard were a bit weird but he managed)
It might be worth having a conversation with the office that manages such things as to the likelihood of the disability being an actual difficulty in completing. If it is, then putting the university on notice that accommodations are necessary would be a good thing.
But, I'm more concerned about the ability to finish in a timely way than the ability to get accepted. Ideally (though we don't live in an ideal world) a disability shouldn't have an affect on admissions other than in a field in which the disability would prevent necessary action/participation.