A vulnerability was found in FiberHome AN5506-01A ONU GPON RP2511. It has been rated as problematic. This issue affects some unknown processing of the file /goform/URL_filterCfg of the component URL Filtering Submenu. The manipulation of the argument url_IP leads to cross site scripting. The attack may be initiated remotely. The exploit has been disclosed to the public and may be used. The vendor was contacted early about this disclosure but did not respond in any way.