source: https://www.securityfocus.com/bid/11268/info

It is reported that Wordpress is affected by various cross-site scripting vulnerabilities. These issues are due to a failure of the application to properly sanitize user-supplied URI input.

Wordpress 1.2 is reported vulnerable, however, other versions may be affected as well.

/bookmarklet.php?popuptitle=[XSS]
/bookmarklet.php?popupurl=[XSS]
/bookmarklet.php?content=[XSS]
/bookmarklet.php?post_title=[XSS]