There's no harm in that at all. As the image falls outside the crop area. IT should be trimmed off when printed anyway.
Usually the prepress will impose the file and it sort of sits in a container where the bleed wouldn't be visible on that edge anyway. And even if it is it's going into the spine. The chances of it appearing in the final printed piece is extremely slim.
However, you can combat this by File>Export>PDF and go to the Marks and Bleeds - untick the Link button for the bleed and change the inside bleed to 0.
Now you won't have any bleed on the inside pages.
If you really do need inside bleed for some reason (pretty unlikley), take a look at InDesignSecrets » Blog Archive » Breaking Pages Apart to Bleed Off a Spine
You should find a link inthe coomnets area to a script that will do the whole file, but if not it's at http://www.printisrael.com/indesign/scripts/freeware/SeparatePages.jsx
pretty much agree with eugene and peter here. so long as the book is not bound as loose leaves (e.g. wiro, comb or coil bound) then there is nothing to worry about.
otherwise i did a piece on exactly what is being talked about:
the script that peter mentions works well BUT i had one instance where type went bezerk, so had to break the spreads the painful way (manually)