RaspAP raspap-webgui sudo Configuration PluginInstaller.php addSudoers privileges management

A vulnerability was found in RaspAP raspap-webgui up to 3.5.5. Affected by this issue is the function PluginInstaller::addSudoers of the file src/RaspAP/Plugins/PluginInstaller.php of the component sudo Configuration. Performing a manipulation results in improper privilege management. The attack may be initiated remotely. The exploit has been made public and could be used. The vendor was contacted early about this disclosure but did not respond in any way.