Open redirect vulnerability in IBM WebSphere Portal 6.1.0.0 through 6.1.0.6 CF27, 6.1.5.0 through 6.1.5.3 CF27, 7.0.0 through 7.0.0.2 CF28, 8.0.0 before 8.0.0.1 CF13, and 8.5.0 before CF01 allows remote attackers to redirect users to arbitrary web sites and conduct phishing attacks via a crafted URL.