Language: Go
Label: vulnerable
CWE: CWE-863 \u2014 Incorrect Authorization
The product performs an authorization check when an actor attempts to access a resource or perform an action, but it does not correctly perform the check. This allows attackers to bypass intended access restrictions.

Code:
func (ns *nodeServer) getNode() (node *v1.Node, err error) {
	// Default to allow patch stale node info
	if envVar, found := os.LookupEnv(AllowPatchStaleNodeEnv); !found || envVar == "true" {
		if ns.node != nil {
			glog.V(3).Infof("Found cached node %s", ns.node.Name)
			return ns.node, nil
		}
	}

	if node, err = kubeclient.GetNode(ns.apiReader, ns.nodeId); err != nil {
		return nil, err
	}
	glog.V(1).Infof("Got node %s from api server", node.Name)
	ns.node = node
	return ns.node, nil
}