Secunia Security Advisory – Slackware has issued an update for mozilla-thunderbird. This fixes a vulnerability, which can be exploited by malicious people to potentially bypass certain security restrictions.
You can download this advisory from the following link: https://packetstormsecurity.com/files/download/80807/sa36399.txt
Source: https://packetstormsecurity.com/files/80807/Secunia-Security-Advisory-36399.html