The 30-year-old actor and reality star recently reprised her role as Lauren Branning in the BBC soap for a special episode marking Dot Cotton's funeral, sparking speculation she was coming back to Albert Square full time.
Jossa said in a statement on Instagram: "Just been inundated with people being lovely, but thinking I'm coming back to EastEnders full time, I don't know if something has been taken out of an interview or been completely made up but either way I'm just shutting down any rumours or stories.
"I am not on the way back to the Square full time, it's not in talks, I 100 per cent have not confirmed a return."
She added: "That's also not me saying I would never go back, when and if the time is right, I would love to."
Jossa took over the role of Lauren Branning, eldest daughter of Max and Tanya, in 2010 when she was just 18. She left the soap in 2018 when her character was axed and went on to win I'm a Celebrity...Get Me Out of Here! a year later.
She went on: "Like I have said many times and continue to say, EastEnders is the best job ever and was an honour for the eight years.
Watch: Coming up on EastEnders...
"As of right now, I am not going back at the moment thanks so much for all the excited DM's and phone calls and texts.. sorry lol."
The Sun reported at the end of December that Jossa had told EastEnders bosses she was open to returning to the soap.
Jossa joined Adam Woodyatt (Ian Beale) in returning for the funeral episode, along with past EastEnders stars Lord Michael Cashman CBE (Colin Russell), Gary Hailes (Barry Clark), Tom Watt (George ‘Lofty’ Holloway), Linda Davidson (Mary ‘the punk’ Smith) and Jan Graveson (Disa O’Brien).