WordPress DMSGuestbook Plugin Multiple Vulnerabilities

NBBN has discovered some vulnerabilities in the DMSGuestbook plugin for WordPress, which can be exploited by malicious users to disclose sensitive information or to manipulate data, and by malicious people to conduct cross-site scripting and script insertion attacks.
Be sure to check if your system is missing security updates or have insecure applications installed:http://secunia.com/software_inspector/