Open redirect vulnerability in the redir function in includes/function.php in C97net Cart Engine before 4.0 allows remote attackers to redirect users to arbitrary web sites and conduct phishing attacks via a URL in the HTTP Referer header to (1) index.php, (2) cart.php, (3) msg.php, or (4) page.php.

SQL injection vulnerability in the sql_query function in cart.php in C97net Cart Engine before 4.0 allows remote attackers to execute arbitrary SQL commands via the item_id variable, as demonstrated by the (1) item_id[0] or (2) item_id[] parameter.

Multiple cross-site scripting (XSS) vulnerabilities in skins/default/outline.tpl in C97net Cart Engine before 4.0 allow remote attackers to inject arbitrary web script or HTML via the (1) path parameter in the "drop down TOP menu (with path)" section or (2) print_this_page variable in the footer_content_block section, as demonstrated by the QUERY_STRING to (a) index.php, (b) checkout.php, (c) contact.php, (d) detail.php, (e) distro.php, (f) newsletter.php, (g) page.php, (h) profile.php, (i) search.php, (j) sitemap.php, (k) task.php, or (l) tell.php.