Horde : Security Vulnerabilities, CVEs, Published In 2007 (XSS)

Multiple cross-site scripting (XSS) vulnerabilities in Horde Groupware Webmail 1.0 allow remote authenticated users to inject arbitrary web script or HTML via unspecified vectors in (1) imp/search.php and (2) ingo/rule.php. NOTE: this issue has been disputed by the vendor, noting that the search.php issue was resolved in CVE-2006-4255, and attackers can only use rule.php to inject XSS into their own pages

Multiple cross-site scripting (XSS) vulnerabilities in Horde IMP H3 4.1.3, and possibly earlier, allow remote attackers to inject arbitrary web script or HTML via (1) the email Subject header in thread.php, (2) the edit_query parameter in search.php, or other unspecified parameters in search.php. NOTE: some of these details are obtained from third party information.

Cross-site scripting (XSS) vulnerability in framework/NLS/NLS.php in Horde Framework before 3.1.4 RC1, when the login page contains a language selection box, allows remote attackers to inject arbitrary web script or HTML via the new_lang parameter to login.php.