ZendTo before 6.06-4 Beta allows XSS during the display of a drop-off in which a filename has unexpected characters.

lib/NSSDropbox.php in ZendTo prior to 5.22-2 Beta allowed IP address spoofing via the X-Forwarded-For header.

lib/NSSDropbox.php in ZendTo prior to 5.22-2 Beta failed to properly check for equality when validating the session cookie, allowing an attacker to gain administrative access with a large number of requests.

ZendTo prior to 5.22-2 Beta allowed reflected XSS and CSRF via the unlock.tpl unlock user functionality.

Zend.To version Prior to 5.15-1 contains a Cross Site Scripting (XSS) vulnerability in The verify.php page that can result in An attacker could execute arbitrary Javascript code in the context of the victim's browser.. This attack appear to be exploitable via HTTP POST request. This vulnerability appears to have been fixed in 5.16-1 Beta.

Cross-site scripting (XSS) vulnerability in lib/NSSDropoff.php in ZendTo before 4.11-13 allows remote attackers to inject arbitrary web script or HTML via a modified emailAddr field to pickup.php.