SQL injection vulnerability in user_read_links.php in Addalink 1.0 beta 4 and earlier, when magic_quotes_gpc is disabled, allows remote attackers to execute arbitrary SQL commands via the category_id parameter.

Addalink 1.0 beta 4 and earlier allows remote attackers to (1) approve web-site additions via a modified approved field and (2) change the visit-counter value via a modified counter field.