Penrith’s Bryce Cartwright has been the victim of a revenge porn attack after an ex-girlfriend posted lewd pictures of the young NRL star on social media.

Brittany Hura posted nude photos of the 22-year-old Panthers playmaker on Twitter over the weekend apparently in revenge following the breakdown of their six-year relationship.

She also posted a video on Facebook threatening to kill Cartwright.

“You think I’m laughing because I’m mentally f***ed up?,” she said in the video, which has since been deleted.

“I’m not mentally f***ed up I’m just laughing at you … you’re going to be dead soon.

“In the grave … six feet under.”

The video has since been deleted.

Ms Hurra said she was aggrieved after Cartwright began dating another woman.

The NRL are not believed to be investigating while the club said they would not comment.

Cartwright is considered on the of rising stars at the Panthers and recently penned a three-year contract extension.