Multiple SQL injection vulnerabilities in mainfile.php in NPDS 5.10 and earlier allow remote authenticated users to execute arbitrary SQL commands via a (1) nickname or (2) Id in a cookie, or (3) the X-Forwarded-For (X_FORWARDED_FOR) HTTP header.

Cross-site scripting (XSS) vulnerability in NPDS 4.8 allows remote attackers to inject arbitrary web script or HTML via Javascript in an IMG tag.

Multiple SQL injection vulnerabilities in NPDS 4.8 and 5.0 allow remote attackers to execute arbitrary SQL commands via the thold parameter to (1) comments.php or (2) pollcomments.php.

Net Portal Dynamic System (NPDS) 5.10 and earlier allows remote attackers to obtain sensitive information via a direct request to (1) header.php, (2) contact.php, or (3) forum_extender.php, which reveals the path in an error message.

Multiple cross-site scripting (XSS) vulnerabilities in Net Portal Dynamic System (NPDS) 5.10 and earlier allow remote attackers to inject arbitrary web script and HTML via the (1) Titlesitename or (2) sitename parameter to (a) header.php, (3) nuke_url parameter to (b) meta/meta.php, (4) forum parameter to (c) viewforum.php, (5) post_id, (6) forum, (7) topic, or (8) arbre parameter to (d) editpost.php, or (9) uname or (10) email parameter to (e) user.php.

SQL injection vulnerability in search.php in NPDS Revolution 13 allows remote attackers to execute arbitrary SQL commands via the query parameter.