Mozilla Thunderbird Multiple Vulnerabilities - Advisories - Secunia
Thunderbirdに複数の脆弱性が存在するそうです。
Some vulnerabilities have been reported in Mozilla Thunderbird, which potentially can be exploited by malicious people to compromise a user's system.
Security Advisory SA30915 - Mozilla Thunderbird Multiple Vulnerabilities - Secunia
Javascriptを無効にするのを推奨していますね。
Security Advisory SA30915 - Mozilla Thunderbird Multiple Vulnerabilities - SecuniaOriginal Advisory:
http://www.mozilla.org/security/announce/2008/mfsa2008-21.html
http://www.mozilla.org/security/announce/2008/mfsa2008-24.html
http://www.mozilla.org/security/announce/2008/mfsa2008-25.html
http://www.mozilla.org/security/announce/2008/mfsa2008-33.html