GreenSQL Firewall (greensql-fw), possibly before 0.9.2 or 0.9.4, allows remote attackers to bypass the SQL injection protection mechanism via a WHERE clause containing an expression such as "x=y=z", which is successfully parsed by MySQL.

GreenSQL Firewall (greensql-fw) before 0.9.2 allows remote attackers to bypass SQL injection protection via a crafted string, possibly involving an encoded space character (%20).