Cross-site scripting (XSS) vulnerability in the Secure Web Mail Client user interface in McAfee Email Gateway (MEG) 7.6.x before 7.6.3.2, 7.5.x before 75.6, 7.0.x through 7.0.5, 5.6, and earlier allows remote authenticated users to inject arbitrary web script or HTML via unspecified tokens in Digest messages.