Cabrius Prime was a planet in or near Federation space, located in the Cabrius star system, somewhere in the galaxy's Alpha or Beta Quadrants.
In the late 2330s decade, Cabrius Prime was destroyed by a supernova. Prior to its destruction, Cabrius Prime's inhabitants had been afflicted with a disease similar to one that struck Bajor in the early 2370s. (DS9 novel: Wrath of the Prophets)