A vulnerability was found in FreeBPX voicemail. It has been rated as problematic. Affected by this issue is some unknown functionality of the file views/ssettings.php of the component Settings Handler. The manipulation of the argument key leads to cross site scripting. Using CWE to declare the problem leads to CWE-79. The weakness was disclosed 12/27/2022 as ffce4882016076acd16fe0f676246905aa3cb2f3. The advisory is shared for download at github.com. This vulnerability is handled as CVE-2021-4283. The attack may be launched remotely. Technical details are available. There is no exploit available. The current price for an exploit might be approx. USD $0-$5k at the moment. The MITRE ATT&CK project declares the attack technique as T1059.007. It is declared as not defined. As 0-day the estimated underground price was around $0-$5k. Upgrading to version 14.0.6.25 is able to address this issue. The updated version is ready for download at github.com. The name of the patch is ffce4882016076acd16fe0f676246905aa3cb2f3. The bugfix is ready for download at github.com. It is recommended to upgrade the affected component. A possible mitigation has been published before and not just after the disclosure of the vulnerability.