Secunia Security Advisory – Debian has issued an update for webcalendar. This fixes a vulnerability, which can be exploited by malicious people to conduct cross-site scripting attacks.
You can download this advisory from the following link: https://packetstormsecurity.com/files/download/56154/sa24974.txt
Source: https://packetstormsecurity.com/files/56154/Secunia-Security-Advisory-24974.html