CVE-2007-3308: Simple Machines Forum

High severity, CVSS 7.5. EPSS: 1.4% chance of exploitation in the next 30 days.

Simple Machines Forum (SMF) 1.1.2 uses a concatenation method with insufficient randomization when creating a WAV file CAPTCHA, which allows remote attackers to pass the CAPTCHA test via an automated brute-force attack.

Affected products

• Simple Machines Simple Machines Forum: version 1.1.2 only

Published 2007-06-21. Last modified 2026-06-16.