CVE-2007-2203: Big Blue Guestbook

Medium severity, CVSS 4.3. EPSS: 1.1% chance of exploitation in the next 30 days.

Cross-site scripting (XSS) vulnerability in Big Blue Guestbook allows remote attackers to inject arbitrary web script or HTML via the message field in the guestbook entry submission form.

Affected products

• Big Blue Guestbook: any version

Published 2007-04-24. Last modified 2026-06-16.