SeaMonkey is an open source Web browser, email and newsgroup client, IRCchat client, and HTML editor.A use-after-free flaw was found in SeaMonkey. Under low memory conditions,visiting a web page containing malicious content could result in SeaMonkeyexecuting arbitrary code with the privileges of the user running SeaMonkey.(CVE-2009-1571)Several flaws were found in the processing of malformed web content. A webpage containing malicious content could cause SeaMonkey to crash or,potentially, execute arbitrary code with the privileges of the user runningSeaMonkey. (CVE-2010-0159)All SeaMonkey users should upgrade to these updated packages, which correctthese issues. After installing the update, SeaMonkey must be restarted forthe changes to take effect.