Bug: XSS security vulnerability

[MilosStanic]

Hi, I've been using the plugin for a couple of years now.
I just had a hacking attempt.
Please find attached screenshots of injected scripts into the database.
Please try to issue an update with sanitized inputs.
Thanks!

[MatissJanis]

Hey @MilosStanic

Thanks for bringing this issue up. I'm currently very busy, so won't have much time to take a look at this, however this is an open-source project and you're more than welcome to submit a Pull Request with the fix.