Manuel Pellegrini's Malaga were stunned when the league's bottom side took the lead on 23 minutes through Aranda.
But Sebastian Fernandez scored a crucial goal on the stroke of half-time for the hosts and it changed the complexion of the match completely.
Malaga started the second half in buoyant fashion and their pressure eventually told when Paraguayan defender Paulo da Silva turned the ball into his own net on 67 minutes.
That opened the floodgates and Argentinean defender Martin Demichelis joined Isco and Jose Salomon Rondon as goalscorers in the final 15 minutes for the winners.
Levante who left it late before winning 2-1 at Espanyol.
Valdo scored the opener after 24 minutes for Levante but it looked like both sides would share the spoils after Kalu Uche equalised for the hosts.
Uche's goal came 15 minutes from time and set up an exciting finale, with substitute Ruben Suarez scoring the winner on 89 minutes, just moments after being introduced.
In other matches, Christian Stuani's penalty with 16 minutes to play saw Racing Santander claim a point in a 1-1 draw against Sporting Gijon.
Real Betis and Getafe's match also ended 1-1.
Cristiano Ronaldo's 37th goal of the season helped Real Madrid to a 1-0 win at Rayo Vallecano in Sunday's La Liga action.
Jose Mourinho's side took the lead nine minutes after the break though, with Ronaldo scoring a remarkable goal.
Mesut Oezil's corner was not cleared properly and fell into Ronaldo's path, before the Portuguese star attempted a backheel from 10 yards.
Barcelona earned a 2-1 victory at Atletico Madrid courtesy of Lionel Messi's late wonder goal.
Dani Alves scored the opening goal of the game in the 36th minute, but Radamel Falcao grabbed a leveller four minutes after half-time.
Messi came to the rescue in the 81st minute with a stunning free-kick to give Barca all three points.
In other matches, Sevilla came from behind to win 2-1 at Valencia.
Alberto Costa had given the hosts a 25th minute lead but Gary Medel responded 11 minutes later for Sevilla.
And Jesus Navas got the winner with 20 minutes to play, as he converted Frederic Kanoute's assist.
Osasuna beat Granada with 2-0 win, with Javad Nekounam and Dejan Lekic scoring for the winners.
Agirretxe scored the only goal of the game in Real Sociedad's 1-0 win over Mallorca.
Strugglers Villarreal and Athletic Bilbao played out a 2-2 draw in the other match of the day.
