CyanogenMod on an unsupported device I'm using a Karbonn A52+ running Mediatek processor and Android 4.2.2 Jellybean. My device is rooted, but unfortunately, no custom recovery (CWM / TWRP) is supported for my device. There is also no CyanogenMod build available for my phone.

Still, I was planning to give a try to this method

Unfortunately, CyanogenMod has shutted down all its systems, including its webpage; so probably, link would also not work.

Now, is there any risk of my phone getting bricked? If yes, then soft brick or hard brick? If my phone gets bricked, can I repair it by simply flashing the stock ROM?
It is always best to install CM Roms that is suited for your device.

If you can't find one, then it's best to stick with it.  The risk will always be there, when you force something into your device that isn't compatible with it.

Hope this helps ...