Secunia Security Advisory – Ubuntu has issued an update for mozilla-thunderbird. This fixes some vulnerabilities, which can be exploited by malicious people to conduct man-in-the-middle and cross-site scripting attacks, bypass certain security restrictions and compromise a user’s system.
You can download this advisory from the following link: https://packetstormsecurity.com/files/download/50231/sa22055.txt
Source: https://packetstormsecurity.com/files/50231/Secunia-Security-Advisory-22055.html