CURD is a dairy product obtained by coagulating milk in a process called curdling. The coagulation can be caused by adding rennet or any edible acidic substance such as lemon juice or vinegar, and then allowing it to sit. The increased acidity causes the milk proteins (casein) to tangle into solid masses, or curds.
github.com/mazen160/struts-pwn_CVE-2017-9805/blob/master/struts-pwn.py