Advanced Guestbook admin.php Username Field SQL Injection
Remote / Network Access
Loss of Confidentiality,
Loss of Integrity
Advanced Guestbook contains a flaw that may allow a remote attacker to inject arbitrary SQL queries. The issue is due to the 'admin.php' script not properly sanitizing user-supplied input to the 'Username' field, which may allow a remote attacker to inject or manipulate SQL queries in the back-end database.
Upgrade to version 2.3.1 or higher, as it has been reported to fix this vulnerability. An upgrade is required as there are no known workarounds.