source: https://www.securityfocus.com/bid/54741/info

eNdonesia is prone to an SQL-injection vulnerability because it fails to sufficiently sanitize user-supplied data before using it in an SQL query.

A successful exploit may allow an attacker to compromise the application, access or modify data, or exploit latent vulnerabilities in the underlying database.

eNdonesia 8.5 is vulnerable; other versions may also be affected. 

http://www.example.com/eNdonesia/mod.php?mod=diskusi&op=viewcat&cid=-[id][SQL INJECTION]