void RenderViewImpl::OnCustomContextMenuAction(
    const CustomContextMenuContext& custom_context,
    unsigned action) {
  if (custom_context.request_id) {
    ContextMenuClient* client =
        pending_context_menus_.Lookup(custom_context.request_id);
    if (client)
      client->OnMenuAction(custom_context.request_id, action);
  } else {
    webview()->performCustomContextMenuAction(action);
  }
}

This category addresses vulnerabilities caused by flawed access control mechanisms, where incorrect permission settings allow unauthorized users to access restricted resources.