Secunia Security Advisory - Some vulnerabilities have been reported in Gbook MX, which can be exploited by malicious people to conduct SQL injection attacks. Gbook MX fails to verify input passed to various scripts properly before it is used in a SQL query. This can be exploited to manipulate SQL queries by injecting arbitrary SQL code.
3e52d9bc3314053a1e0edead28e14c55df26b88e34aeaf5fc14b537be47359d5