std::string RenderFrameDevToolsAgentHost::GetParentId() {
  if (IsChildFrame()) {
    FrameTreeNode* frame_tree_node =
        GetFrameTreeNodeAncestor(frame_tree_node_->parent());
    return RenderFrameDevToolsAgentHost::GetOrCreateFor(frame_tree_node)
        ->GetId();
  }

  WebContentsImpl* contents = static_cast<WebContentsImpl*>(web_contents());
  if (!contents)
    return "";
  contents = contents->GetOuterWebContents();
  if (contents)
    return DevToolsAgentHost::GetOrCreateFor(contents)->GetId();
  return "";
}

The product receives input or data, but it does not validate or incorrectly validates that the input has the properties that are required to process the data safely and correctly.