Description
WordPress is prone to a vulnerability which can be exploited by malicious people to cause a Denial of Service. The vulnerability is caused due to the 'wp-register.php' script against which attackers can trigger repeated registration to cause a high CPU load, potentially resulting in a Denial of Service. WordPress versions 2.0.1 and prior are all vulnerable.
Remediation
Update to WordPress version 2.0.2 or latest
References
http://www.securityfocus.com/archive/1/427152/30/0/threaded
http://packetstormsecurity.org/files/44497/HYSA-2006-005.txt
Related Vulnerabilities
Python Other Vulnerability (CVE-2015-5652)
Apache Tomcat Permissions, Privileges, and Access Controls Vulnerability (CVE-2011-5062)
Joomla! Core 3.0.x Security Bypass (3.0.0 - 3.0.3)
WordPress Plugin Job Board by BestWebSoft Cross-Site Scripting (1.0.0)
PrestaShop Cross-Site Request Forgery (CSRF) Vulnerability (CVE-2013-4792)