Multiple cross-site scripting (XSS) vulnerabilities in Cisco CallManager and Unified Communications Manager (CUCM) before 3.3(5)sr2b, 4.1 before 4.1(3)sr5, 4.2 before 4.2(3)sr2, and 4.3 before 4.3(1)sr1 allow remote attackers to inject arbitrary web script or HTML via the lang variable to the (1) user or (2) admin logon page, aka CSCsi10728.