Some vulnerabilities have been reported in various Horde products,
which can be exploited by malicious people to conduct script insertion
attacks
Input via MIME attachment linking is not properly sanitised in the
MIME library before being used. This can be exploited to execute
arbitrary HTML and script code in a user's browser session if e.g. a
malicious email is viewed.
Certain unspecified input in HTML messages is not properly
sanitised before being used. This can be exploited to execute
arbitrary HTML and script in a user's browser session if e.g. a
malicious HTML email is viewed.