Accidentally deleted superuser from CyanogenMod installation. How can I re-install superuser again? I have rooted galaxy s3, but I somehow deleted superuser. I still have CWM, and my phone can boot into download mode. Am I able to flash CyanogenMod without bricking my phone?
Because you still have a working CWM, you can just reflash it.

There are 2 competing implementations:


SuperSU from Chainfire 
Superuser from ChainsDD


Most rooting utilities install the latter, so you're safe to also flash this.