can of worms

“can of worms”
a situation which causes a lot of problems for you when you start to deal with it; a very difficult issue or set of problems; an array of difficulties
مجموعه مشکلات و سختی ها
Example 1: Corruption is a serious problem, but nobody has yet been willing to open up that can of worms
Example 2: This political scandal is a real can of worms