CVE-2010-4358: Mrcgiguy Guestbook

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

Multiple cross-site scripting (XSS) vulnerabilities in gb.cgi in MRCGIGUY (MCG) Guestbook 1.0 allow remote attackers to inject arbitrary web script or HTML via the (1) name, (2) email, (3) website, and (4) message parameters.

Affected products

• Mrcgiguy Guestbook: version 1.0 only

Published 2010-12-01. Last modified 2026-06-16.