The action is very high, with those strings it should probably be around the 5mm to 10mm range at the end of the fingerboard.
From the first pic the bridge looked like it might be developing a curve in it which if it is the case would require corrective action soon. A pic looking down at the bridge would help.
Regarding the action, it could be the bridge has not been sized for this bass, or it could be that the neck is bowing or that the neck joint is not holding properly. A few pics of the neck joint area would be helpful. A straight edge along the length of the seam of the fingerboard and neck would tell whether the neck is bowing and pics of that would also be helpful.
At this point that action is really not playable, especially with those strings. I'd suggest don't try to play it too much to avoid hurting your hands, until you know what is happening with the neck.
Just to let you know, if the neck joint is not holding, that is a very common, but also a very major repair. Neck bow could also be a major repair, but might also be gently correctable without major surgery. A bad neck joint should be repaired asap given the effect on action. A possible temporary work around for neck bow might be bridge adjustments and lower tension strings, but it should also be fixed asap.
Of course the best way to have this properly diagnosed is to take it to a luthier.