Secunia Security Advisory – Debian has issued an update for horde3. This fixes a vulnerability, which can be exploited by malicious people to conduct script insertion attacks.
You can download this advisory from the following link: https://packetstormsecurity.com/files/download/70220/sa31959.txt
Source: https://packetstormsecurity.com/files/70220/Secunia-Security-Advisory-31959.html