woothemes/woocommerce — Issue #599: Bug in coupons allowing multiple use of same coupon
Author: watabekensan
Created: 2012-02-08 15:09:51+00:00
State: open

the same coupon can be used multiple times on the same cart just by changing the case. This can be exploited big time.

for example u have a coupon ABC, you can use it as ABC, abc, Abc,abC, aBc, aBC, etc... and the discounts keep adding up.