Multiple cross-site scripting (XSS) vulnerabilities in templates/tasklists/tasklists.inc in Horde Nag Task List Manager H3 before 2.0.4 allow remote authenticated users to inject arbitrary web script or HTML via (1) the tasklist's name or (2) description, when creating a new tasklist.
Multiple cross-site scripting (XSS) vulnerabilities in templates/notepads/notepads.inc in Horde Mnemo Note Manager H3 before 2.0.3 allow remote authenticated users to inject arbitrary web script or HTML via (1) the notepad's name or (2) description, when creating a new notepad.
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.
In Horde Groupware 5.2.19 and 5.2.21, there is XSS via the Color field in a Create Task List action.
lib/Horde/Mime/Viewer/Ooo.php in Horde Mime_Viewer before 2.2.4 allows XSS via an OpenOffice document, leading to account takeover in Horde Groupware Webmail Edition. This occurs after XSLT rendering.
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.
In Horde Groupware 5.2.19-5.2.22, there is XSS via the URL field in a "Calendar -> New Event" action.