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

Zend Debugger in Zend Server before 9.1.3 has XSS, aka ZSR-2455.

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.

CRLF injection vulnerability in Zend\Mail (Zend_Mail) in Zend Framework before 1.12.12, 2.x before 2.3.8, and 2.4.x before 2.4.1 allows remote attackers to inject arbitrary HTTP headers and conduct HTTP response splitting attacks via CRLF sequences in the header of an email.

Zend Framework before 2.2.10 and 2.3.x before 2.3.5 has Potential SQL injection in PostgreSQL Zend\Db adapter.

SQL injection vulnerability in Zend Framework before 1.12.9, 2.2.x before 2.2.8, and 2.3.x before 2.3.3, when using the sqlsrv PHP extension, allows remote attackers to execute arbitrary SQL commands via a null byte.

ZF2014-03 has a potential cross site scripting vector in multiple view helpers

Multiple cross-site scripting (XSS) vulnerabilities in Zend Framework 2.0.x before 2.0.1 allow remote attackers to inject arbitrary web script or HTML via unspecified input to (1) Debug, (2) Feed\PubSubHubbub, (3) Log\Formatter\Xml, (4) Tag\Cloud\Decorator, (5) Uri, (6) View\Helper\HeadStyle, (7) View\Helper\Navigation\Sitemap, or (8) View\Helper\Placeholder\Container\AbstractStandalone, related to Escaper.

SQL injection vulnerability in Zend Framework 1.10.x before 1.10.9 and 1.11.x before 1.11.6 when using non-ASCII-compatible encodings in conjunction PDO_MySql in PHP before 5.3.6.