We have a problem with our toilet. When we flush it, water rises in the bowl, then slowly leaks away through the drain onto the floor. I took a video of the problem to possibly send to a plumber. However, firstly I wanted to know if it is possible to fix it ourselves.

The water seems to be leaking through cracks in the caulk where the drainage pipe goes into the floor. I was wondering if unclogging the toilet and re-applying the foam/paste would solve the problem, or if it would only serve as a temporary fix. We haven't tried this yet because: 

1. We currently don't have a plunger.

2. We don't want to worsen the problem in case a plumber needs to come

All help is welcome and thanks in advance!

[video of the problem][2], still capture:

[![enter image description here][1]][1]


  [1]: https://i.sstatic.net/qMgod.jpg
  [2]: https://i.sstatic.net/pLlaM.jpg