CVE-2006-1978: Flexbb

High severity, CVSS 7.5. EPSS: 1.3% chance of exploitation in the next 30 days.

SQL injection vulnerability in inc/start.php in FlexBB 0.5.5 and earlier allows remote attackers to execute arbitrary SQL commands via the flexbb_username COOKIE parameter.

Affected products

• Flexbb Flexbb: up to and including 0.5.5

Published 2006-04-21. Last modified 2026-06-16.