Secunia Security Advisory – Debian has issued an update for webcalendar. This fixes a vulnerability, which can be exploited by malicious people to compromise a vulnerable system.
You can download this advisory from the following link: https://packetstormsecurity.com/files/download/39801/sa16675.txt
Source: https://packetstormsecurity.com/files/39801/Secunia-Security-Advisory-16675.html