A problem has been found in the Ping6 Diagnóstico component, specifically in the /form2pingv6.cgi file. The issue affects some unknown functionality of this file. The manipulation of the `ip6addr` argument with specific input, such as `<img/src/onerror=prompt(8)>`, leads to cross-site scripting. This issue can be exploited remotely. The exploit has been made public, and the vendor was contacted about this issue but did not respond.