In Horde Groupware 5.2.19, there is XSS via the Name field during creation of a new Resource. This can be leveraged for remote code execution after compromising an administrator account, because the CVE-2015-7984 CSRF protection mechanism can then be bypassed.

Multiple cross-site request forgery (CSRF) vulnerabilities in Horde before 5.2.8, Horde Groupware before 5.2.11, and Horde Groupware Webmail Edition before 5.2.11 allow remote attackers to hijack the authentication of administrators for requests that execute arbitrary (1) commands via the cmd parameter to admin/cmdshell.php, (2) SQL queries via the sql parameter to admin/sqlshell.php, or (3) PHP code via the php parameter to admin/phpshell.php.