Multiple cross-site scripting (XSS) vulnerabilities in the DMSGuestbook 1.8.0 and 1.7.0 plugin for WordPress allow remote attackers to inject arbitrary web script or HTML via the (1) gbname, (2) gbemail, (3) gburl, and (4) gbmsg parameters to unspecified programs.  NOTE: the provenance of this information is unknown; the details are obtained solely from third party information.