I'm fairly sure it has been judged unworthy of belief.
Not being critical of anyone mind you. We all need to have an open mind and we know that the Church has been skeptical of some and then reverses judgement.
I am beginning to believe whether it be Catholic or Protestant Apocalypticism, we must be cautious and careful.
No decision on Garabandal so says this website; but it seems information pro and con is flexed in certain ways to say anything.
I don't know if I agree with things like the foundations/charities out there that charter big trips when they think there will be the sign in the sky in Spain.
But the film footage of when the girls received communion in Garabandal is really amazing because the Eucharistic host would just appear on the girls' tongues. Amazing.