CVE-2021-47950: Ampps Advanced Guestbook

Medium severity, CVSS 6.4. EPSS: 0.2% chance of exploitation in the next 30 days.

Advanced Guestbook 2.4.4 contains a persistent cross-site scripting vulnerability in the smilies administration interface that allows authenticated attackers to inject malicious scripts by manipulating the s_emotion parameter. Attackers can submit POST requests to admin.php with JavaScript code in the s_emotion field, which executes when administrators view the smilies tab.

Affected products

• Ampps Advanced Guestbook: version 2.4.4 only

Published 2026-05-10. Last modified 2026-07-20.