Cross-site scripting (XSS) vulnerability in (1) Text_Filter/Filter/xss.php in Horde 3.1.x before 3.1.9 and 3.2.x before 3.2.2 and (2) externalinput.php in Popoon r22196 and earlier allows remote attackers to inject arbitrary web script or HTML by using / (slash) characters as replacements for spaces in an HTML e-mail message.
https://exchange.xforce.ibmcloud.com/vulnerabilities/45031
http://www.vupen.com/english/advisories/2008/2548
http://www.securityfocus.com/archive/1/496182/100/0/threaded
http://www.phpmyfaq.de/advisory_2008-09-11.php
http://www.openwall.com/lists/oss-security/2008/09/10/1
http://www.ocert.org/advisories/ocert-2008-012.html
http://securityreason.com/securityalert/4245
http://secunia.com/advisories/31842
http://ocert.org/patches/2008-012/Text_Filter.patch
http://ocert.org/patches/2008-012/Text_Filter.31.patch
http://marc.info/?l=horde-announce&m=122104360019867&w=2
http://marc.info/?l=horde-announce&m=122103888111491&w=2
http://blog.liip.ch/missed-case-in-externalinput-php-resulting-in-viable-xss-attacks.html