Secunia Research has discovered a security issue in Quicksilver Forums, which can be exploited by malicious people to disclose potentially sensitive information. The database backup functionality stores the database backup with a semi-predictable file name inside the web root. This can be exploited to download the backup by guessing the file name.
You can download this advisory from the following link: https://packetstormsecurity.com/files/download/87371/secunia-qfbidisclose.txt
Source: https://packetstormsecurity.com/files/87371/Quicksilver-Forums-Backup-Information-Disclosure.html