Cross-site scripting (XSS) vulnerability in SRX Web Authentication (webauth) in Juniper Junos 11.4 before 11.4R11, 12.1X44 before 12.1X44-D34, 12.1X45 before 12.1X45-D25, 12.1X46 before 12.1X46-D20, and 12.1X47 before 12.1X47-D10 allows remote attackers to inject arbitrary web script or HTML via unspecified vectors.