Cross-site request forgery (CSRF) vulnerability in the Horde Application Framework before 3.3.9 allows remote attackers to hijack the authentication of unspecified victims for requests to a preference form.

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.

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 newlang parameter to login.php.

Cross-site scripting (XSS) vulnerability in util/iconbrowser.php in the Horde Application Framework before 3.3.9 allows remote attackers to inject arbitrary web script or HTML via the subdir parameter.

Multiple cross-site scripting (XSS) vulnerabilities in Horde Application Framework before 3.0.8 allow remote authenticated users to inject arbitrary web script or HTML via multiple vectors, as demonstrated by (1) the identity field, (2) Category and (3) Label search fields, (4) the Mobile Phone field, and (5) Date and (6) Time fields when importing CSV files, as exploited through modules such as (a) Turba Address Book, (b) Kronolith, (c) Mnemo, and (d) Nag.