Multiple open redirect vulnerabilities in OpenText Documentum Webtop 6.8.0160.0073 allow remote attackers to redirect users to arbitrary web sites and conduct phishing attacks via a (1) URL in the startat parameter to xda/help/en/default.htm or (2) /%09/ (slash encoded horizontal tab slash) followed by a domain in the redirectUrl parameter to xda/component/virtuallinkconnect.