The 29-year-old Scottish keeper, who has spent five seasons with the Bluebirds, has impressed many this campaign with a string of fine performances.
"He can't stay away from the plaudits at the moment," Hudson is quoted as saying by the club's official website. "He's had an absolutely fantastic season, he's on fire.
"He's got us so many points from so many games. Marshy deserves every bit of credit he's got this year and he will only get better.
"He's still got age on his side too for a goalkeeper so he's only going to go on and improve. He'll be a top goalkeeper for years to come."
Cardiff are currently in the Premier League relegation zone.