Improper Input Validation
Open redirect vulnerability in the OpenID extension in TYPO3 4.5.0 through 4.5.31, 4.7.0 through 4.7.16, 6.0.0 through 6.0.11, and 6.1.0 through 6.1.6 allows remote attackers to redirect users to arbitrary web sites and conduct phishing attacks via unspecified vectors.