Multiple cross-site scripting (XSS) vulnerabilities in the administration interface in Horde Application Framework before 3.3.6, Horde Groupware before 1.2.5, and Horde Groupware Webmail Edition before 1.2.5 allow remote attackers to inject arbitrary web script or HTML via the PATH_INFO to (1) phpshell.php, (2) cmdshell.php, or (3) sqlshell.php in admin/, related to the PHP_SELF variable.

Text_Filter/lib/Horde/Text/Filter/Xss.php in Horde Application Framework before 3.3.6, Horde Groupware before 1.2.5, and Horde Groupware Webmail Edition before 1.2.5 does not properly handle data: URIs, which allows remote attackers to conduct cross-site scripting (XSS) attacks via data:text/html values for the HREF attribute of an A element in an HTML e-mail message. NOTE: the vendor states that the issue is caused by "an XSS vulnerability in Firefox browsers."

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.

Argument injection vulnerability in the cleanup cron script in Horde Project Horde and IMP before Horde Application Framework 3.1.4 allows local users to delete arbitrary files and possibly gain privileges via multiple space-delimited pathnames.

index.php in Horde Application Framework before 3.1.2 allows remote attackers to include web pages from other sites, which could be useful for phishing attacks, via a URL in the url parameter, aka "cross-site referencing." NOTE: some sources have referred to this issue as XSS, but it is different than classic XSS.

services/go.php in Horde Application Framework 3.0.0 through 3.0.10 and 3.1.0 through 3.1.1 does not properly restrict its image proxy capability, which allows remote attackers to perform "Web tunneling" attacks and use the server as a proxy via (1) http, (2) https, and (3) ftp URL in the url parameter, which is requested from the server.

Eval injection vulnerability in Horde Application Framework versions 3.0 before 3.0.10 and 3.1 before 3.1.1 allows remote attackers to execute arbitrary code via the help viewer.