system
Describe <CVE-2007-4999>.
user
What is <CVE-2007-4999>?
assistant
libpurple in Pidgin 2.1.0 through 2.2.1, when using HTML logging, allows remote attackers to cause a denial of service (NULL dereference and application crash) via a message that contains invalid HTML data, a different vector than CVE-2007-4996..