The SeaMonkey project is a community effort to deliver production-quality releases of code derived from the application formerly known as 'Mozilla Application Suite'.
The SeaMonkey project is vulnerable to arbitrary JavaScript bytecode execution and arbitrary code execution.
An attacker could entice a user to load malicious JavaScript or a malicious web page with a SeaMonkey application and execute arbitrary code with the rights of the user running those products. It is important to note that in the SeaMonkey email client, JavaScript is disabled by default.
There is no known workaround at this time.
All SeaMonkey users should upgrade to the latest version:
# emerge --sync
# emerge --ask --oneshot --verbose ">=www-client/seamonkey-1.0.6"