CVE-2006-3796: Deluxebb

High severity, CVSS 7.5. EPSS: 1.6% chance of exploitation in the next 30 days.

DeluxeBB 1.07 and earlier does not properly handle a username composed of a single space character, which allows remote authenticated users to login as the "space" user, post as the guest user, and block the ability of an administrator to ban the "space" user.

Affected products

• Deluxebb Deluxebb: up to and including 1.07

Published 2006-07-24. Last modified 2026-06-16.