Hacker, ‘Amine Cherrai’ reported a new Facebook OAuth flaw, whose exploitation is very similar to Nir Goldshlager’s findings but with a new un-patched way. Successful exploitation once again allowed hacker to hijack Facebook accounts using OAuth Flaw. This bug was closed by Facebook Security Team few days back and your social accounts are once again secured, till next finding! The vulnerability was fixed by Facebook security team few days ago and is now closed.
Source: https://thehackernews.com/2013/04/another-way-to-hack-facebook-accounts.html