The Admin Access With Levels plugin in osCommerce 1.5.1 allows remote attackers to access files in the "admin/" directory by modifying the inlogin parameter to a non-zero value.

Multiple cross-site scripting (XSS) vulnerabilities in osCommerce 2.2 Milestone 2 Update 060817 allow remote attackers to inject arbitrary web script or HTML via the (1) page parameter in the (a) bannermanager.php, (b) bannerstatistics.php, (c) countries.php, (d) currencies.php, (e) languages.php, (f) manufacturers.php, (g) newsletters.php, (h) ordersstatus.php, (i) productsattributes.php, (j) productsexpected.php, (k) reviews.php, (l) specials.php, (m) statsproductspurchased.php, (n) statsproductsviewed.php, (o) taxclasses.php, (p) taxrates.php, or (q) zones.php scripts in /admin, and the (2) zpage parameter in (r) admin/geozones.php.