The former Hibs and Dunfermline Athletic star was diagnosed around the turn of the year and began chemotherapy treatment in January.
A Cardiff City player since 2016, this announcement comes 12 days after he made his return to football, coming on as a substitute in a final-day draw with Rotherham United.
The 36-year-old Ivorian shared the happy news with fans as he took to Twitter on Thursday morning to thank those who had sent messages of support.
He wrote: "Hey everyone, just a quick message to inform you that I'm now cancer free! It is of course an incredibly heartwarming news for my family and I, we are over the moon right now.
“I really want to thank each and everyone that has been supporting me, whether it's been with a comment, a message, a like or whatever, that definitely gave me extra strength to go through this. Above all, I want to thank the family at the NHS who took such good care of me, I will always be grateful for your job.
“Thank you to all my family, my friends and of course the club and everyone one in the football industry that has helped me facing this challenge. I wish you all a blessed day and hopefully will see you soon again on the pitch. Sol.”
He made 53 appearances at Dumfermline after joining from PSG in 2006 before moving onto Easter Road. At Hibs he stayed for two-and-a-half seasons, tallying up 80 appearances and becoming a strong fans’ favourite.