Language: JavaScript
Label: safe
CWE: CWE-843 \u2014 Access of Resource Using Incompatible Type ('Type Confusion')
The product allocates or initializes a resource such as a pointer, object, or variable using one type, but it later accesses that resource using a type that is incompatible with the original type.

Code:
  get foo() {
    this.tutu = 'hi';
    delete obj.bar;
    obj.tutu = 'lol';
  },