If you use the Comment Rating plugin for your WordPress powered site, you are highly encouraged to upgrade to the latest version as it fixes a security vulnerability. More specifically, a Cross-site Request Forgery attack. According to the report at OSVDB.org which is an Open Source Vulnerability Database:
The flaw exists because the application does not require multiple steps or explicit confirmation for unspecified sensitive transactions for the admin function. By using a crafted URL (e.g., a crafted GET request inside an “img” tag), an attacker may trick the victim into clicking on the image to take advantage of the trust relationship between the authenticated victim and the application. Such an attack could trick the victim into executing arbitrary commands in the context of their session with the application, without further prompting or verification.