Is it dangerous to set file access to 777?

Question

Access rights

I decided to install CKEDITOR, installed it, connected it, but wrote that the files were not found. I decided to give 644 to some files and 755 to folders, there were sooo many files, I couldn’t sort through them all, and I decided to immediately put chmod -R 777 on all of them. is it dangerous? The site is on the server

Answer 1

On the server - yes, it's dangerous. This is a potential vulnerability.