MyBB <1.6.9 is vulnerable to Stored, Error based, SQL Injection. Vulnerable code: /editpost.php === Line 398 === $posthash_query = "posthash='{$posthash}' OR "; === It can be done by using Tamper Data(Or Live HTTP Headers), and when submitting a post, edit the 'posthash' POST parameter to your payload, submitting, then going to edit your post. Small "HOWTO" in picture: http://imgur.com/a/JxfEI This bug was not found by me, but afaik, I am the first one to release it. -- *Joshua Rogers* - Retro Game Collector && IT Security Specialist gpg pubkey