Multiple cross-site scripting (XSS) vulnerabilities in Zimbra Collaboration Suite (ZCS) 4.0.3, 4.5.6, and possibly other versions before 4.5.10 allow remote attackers to inject arbitrary web script or HTML via an e-mail attachment, possibly involving a (1) .jpg or (2) .gif image attachment.
https://exchange.xforce.ibmcloud.com/vulnerabilities/41044
http://www.zimbra.com/jp/products/vulnerability.html
http://www.securityfocus.com/bid/28134
http://secunia.com/advisories/29263