Multiple cross-site scripting (XSS) vulnerabilities in the web interface for IBM Rational ClearQuest before 2003.06.16 Patch 2008A, 7.0.0.2_iFix01, and 7.0.1.1_iFix01 allow remote attackers to inject arbitrary web script or HTML via the (1) contextid, (2) username, (3) userNameVal, and (4) schema parameters to the login component.