that didn't work for me. this did: <img onload="javascript:alert(0);" src="http://i.imgur.com/fXYSkbC.gif">
img tags support the onload attribute and is a typical element people use in posts
img tags support the onload attribute and is a typical element people use in posts
Maybe it doesn't work because the page is already loaded so the onload is never run.
<img src="404me" onerror="alert('test')" />