Cross-site scripting (XSS) vulnerability in the print_header_uc function for SqWebMail 4.0.4 and earlier, and possibly 3.x, allows remote attackers to inject arbitrary web script or HRML via (1) e-mail headers or (2) a message with a "message/delivery-status" MIME Content-Type.
https://exchange.xforce.ibmcloud.com/vulnerabilities/16467
http://www.gentoo.org/security/en/glsa/glsa-200408-02.xml
http://www.debian.org/security/2004/dsa-533