SeaMonkey is an open source web browser, email and newsgroup client, IRC chat client, and HTML editor. A race condition flaw was found in the way SeaMonkey handled Document Object Model element properties. A web page containing malicious content could cause SeaMonkey to crash or, potentially, execute arbitrary code with the privileges of the user running SeaMonkey. All SeaMonkey users should upgrade to these updated packages, which correct this issue. After installing the update, SeaMonkey must be restarted for the changes to take effect.