Gabor's husband, Frederic Prinz von Anhalt, said Saturday that the actress had a high fever and was bleeding from a tube in her stomach.
The 94-year-old Gabor has been hospitalized repeatedly since July 2010, when she broke her hip falling from bed. Most of Gabor's right leg was amputated in January because of gangrene.
She appeared in films ranging from "Moulin Rouge" in 1952 to "Queen of Outer Space" in 1958. She also appeared on TV specials, game shows, and guest-starred on various TV series, often playing herself.