CVE-2009-2440: Jnmsolutions Guestbook

Medium severity, CVSS 4.3. EPSS: 1.7% chance of exploitation in the next 30 days.

Cross-site scripting (XSS) vulnerability in index.php in JNM Guestbook 3.0 allows remote attackers to inject arbitrary web script or HTML via the page parameter.

Affected products

• Jnmsolutions Guestbook: version 3.0 only

Published 2009-07-13. Last modified 2026-06-16.