Facebook Inc said on Friday it has discovered a bug that may have affected up to 6.8 million people who used Facebook login to grant permission to third-party apps to access photos.
The company said in a blog that the problem has been fixed but that it may have affected up to 1,500 apps built by 876 developers.
Facebook said some third-party apps may have gained access to broader set of photos than usual for 12 days between September 13 to September 25.
The bug is the latest in a string of privacy problems the tech giant disclosed this year,