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.

Cross-site scripting (XSS) vulnerability in MIME/MIME/Contents.php in the MIME library in Horde 3.2.x before 3.2.2 allows remote attackers to inject arbitrary web script or HTML via the filename of a MIME attachment in an e-mail message.

Cross-site scripting (XSS) vulnerability in services/obrowser/index.php in Horde 3.2 and Turba 2.2 allows remote attackers to inject arbitrary web script or HTML via the contact name.

Directory traversal vulnerability in Horde 3.1.6, Groupware before 1.0.5, and Groupware Webmail Edition before 1.0.6, when running with certain configurations, allows remote authenticated users to read and execute arbitrary files via ".." sequences and a null byte in the theme name.

IMP Webmail Client 4.1.5, Horde Application Framework 3.1.5, and Horde Groupware Webmail Edition 1.0.3 does not validate unspecified HTTP requests, which allows remote attackers to (1) delete arbitrary e-mail messages via a modified numeric ID or (2) "purge" deleted emails via a crafted email message.

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.

Cross-site scripting (XSS) vulnerability in horde/imp/search.php in Horde IMP H3 before 4.1.3 allows remote attackers to include arbitrary web script or HTML via multiple unspecified vectors related to folder names, as injected into the vfolder_label form field in the IMP search screen.

Multiple cross-site scripting (XSS) vulnerabilities in Horde Application Framework 3.0.0 through 3.0.10 and 3.1.0 through 3.1.1 allow remote attackers to inject arbitrary web script or HTML via a (1) javascript URI or an external (2) http, (3) https, or (4) ftp URI in the url parameter in services/go.php (aka the dereferrer), (5) a javascript URI in the module parameter in services/help (aka the help viewer), and (6) the name parameter in services/problem.php (aka the problem reporting screen).

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.