Apparently there was some bug on imgur.com that allowed people to upload arbitrary JavaScript appended to the images. imgur.com seems to have acknowledged the issue already[0]. The exploit found was targetting an imageboard called 8chan[1]. There are also a few threads on 4chan about this[2][3][4][5].<p>[0] https://twitter.com/imgur/status/646109824342593536<p>[1] http://pastebin.com/heYvWu5Y<p>[2] https://rbt.asia/g/thread/50407085<p>[3] https://rbt.asia/g/thread/50409306<p>[4] https://rbt.asia/g/thread/50410681<p>[5] https://rbt.asia/g/thread/50411692
This is called XSS. see here:<p><a href="https://en.wikipedia.org/wiki/Cross-site_scripting#Persistent" rel="nofollow">https://en.wikipedia.org/wiki/Cross-site_scripting#Persisten...</a>