CVE-2005-2539: Flatnuke

Medium severity, CVSS 4.3. EPSS: 2.5% chance of exploitation in the next 30 days.

Multiple cross-site scripting (XSS) vulnerabilities in FlatNuke 2.5.5 and possibly earlier versions allow remote attackers to inject arbitrary web script or HTML via the (1) bodycolor, (2) backimage, (3) theme, or (4) logo parameter to structure.php, (5) admin, (6) admin_mail, or (7) back parameter to footer.php, or (8) the message body in a news post.

Affected products

• Flatnuke Flatnuke: version 2.5.5 only

Published 2005-08-10. Last modified 2026-06-16.