Vulnerability · Published May 10, 2026 · Assigned by VulnCheck

CVE-2021-47950Advanced Guestbook 2.4.4 Persistent XSS via Smilies

Medium 6.4

In plain English

A medium-severity cross-site scripting in Advanced Guestbook from Ampps. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.2% (higher than 8% of all known vulnerabilities).

Severity (CVSS 3.1)6.4Medium

Exploit odds (30 days)0.2%top 91.6% of all CVEs

Exploited in the wildNo reportsCISA SSVC: poc

Attack toolingNoneno public tooling known

Official description

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 (as reported)

Vendor	Product	Versions
Ampps	Advanced Guestbook	2.4.4

Weakness: CWE-79 · Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N

References

ExploitDB-49875 exploit
Official Product Homepage product
VulnCheck Advisory: Advanced Guestbook 2.4.4 Persistent XSS via Smilies third-party-advisory